A vehicle without a differential would hop and bump along the pavement for an unstable, shaky ride. Orders by 4PM Ship Out Today. If you are wondering about the health of your axle or want to save money by getting a repair instead of a replacement, call us and talk to our professionals for the best advice 1-832-280-8489. OEM & Aftermarket Parts at Great Prices. If that rear axle has the rotors bolted on behind the hub, then we will turn or replace it. Schedule Service Top 10 Best Differential Repair in Rochester, NY - July 2024 - Yelp - Chili Automotive, Sam Lo Vetro Automotive, Action Automotive Service, Michael's Automotive Tech Center, Clar's Elmwood Automotive, Ralph Honda, Bob Johnson Chevrolet, Hoselton Auto Mall, The Auto Stop, Auction Direct USA - Victor Top 10 Best Differential Repair in Queens, NY 11439 - June 2024 - Yelp - Lee Myles AutoCare + Transmissions - Hollis, M-Spec Performance, Alberto's Auto Repair, New York Transmission Group NYTG INC , Everything Auto, NYJ Transmissions, Lee Myles - College Point, Island Rovers, Tri Auto & Body, Paragon Honda Service Center MT Schiele Transmissions Repair & Auto service Saint Louis Missouri, auto, drivetrain, differentials, transfer case & transmissions in Affton, Crestwood, MO. Tire Auto Service Centers, Man Versus Machine Please search our Differential and Axle Housing stock page for new and used front and rear differentials for your Mercedes Benz. Are you looking for an axle shop or a rear differential service near me? Top 10 Best Differential Repair in Charlotte, NC - July 2024 - Yelp - Tarheel 4WD Center, Queen City Transmission, Primal 4x4 & Fab, Coffey Can Fix It, Stainback Auto Service, Honest-1 Auto Care, B & R Auto Repair & Tire, Christian Brothers Automotive Indian Trail, Mr. Rebuilt Meritor Differentials and Parts. - Fri: 8am-6pm. 4545 expert technicians, competitive prices! contact us the finest parts and components. Houston Rebuilt Axles And Differentials Call us on 1-832-280-8489 Jim Jennings Transmissions, your trusted auto repair shop in Baltimore, Maryland, offers expert differential service to keep your vehicle in peak condition. Rear-wheel drive vehicles use an independent differential located between the two rear wheels. Rear Differentials. Custom axle housings, welding, fabrication and spindle repair. Buried deep in the drivetrain of every vehicle on the road is a differential. Regular service of your differential will reduce wear, reduce high-cost repairs, and keep your vehicle operating smoothly and problem free for years to come. com. . Typically, two-wheel drive vehicles have a single differential (either in the front or rear depending on which wheels are the driving force), while four-wheel drive and all-wheel drive vehicles have two differentials (one in the front, one in the rear). Rebuilt Eaton Differentials and Parts. We can accommodate your racing application or offer servicing and repair to your fleet. Rear differential replacements for trucks (about $2,500 or more) are far more common than replacements for cars (about $4,000 or more). We can also change ratios to give you more pulling power or better gas mileage. Comprehensive Repair and Renewal Chevrolet 2500 Silverado Truck Rear Differential with Limited Slip 9. Evan / Posted Jun 5, 2024. We do custom rears from Grandma's Car to Tow, Show & Go! We stock any Eaton parts your shop may need to rebuild new or used rear end units such as gearing, cases, seals, gaskets, Axle and bearing kits specifically for on highway, off highway, industrial, agricultural, construction, mining and logging. 127th St. You’ve seen that bulge in the middle of the axle when you’re behind a truck. Old fluid in your car’s differential can lead to this part breaking down over time. The Meritor Authorized Rebuilder program offers reman differentials for Meritor 14X, 145 and 160, as well as Dana® DS404, RS404, DSP40 and RSP40 families. Jun 5, 2011 · Shop by Diff Shop all. Call today! CONCORD: _ 704-782-5557 Top 10 Best Rear Differential in San Jose, CA - June 2024 - Yelp - Almaden Auto Repair, Rearend Specialties, Gearmaster, Mike's Transmissions, Bay Area Differential And Gear Garage, Speed Element, T & N Auto Services, Leale's Transmissions & Auto Repair, Dynamic Autoworks, Advanced Trucks Is your stock four wheel drive really a two wheel drive? One in the front and one in the rear makes two in our book. Avoid vehicle damage and time-consuming repairs by scheduling a service appointment at the Badger Truck & Auto Group service center — we even have the dedicated Badger Rebuild Center at 4375 N. Our state-of-the-art shop in Baltimore is equipped with advanced technology and staffed by experienced technicians dedicated to ensuring the optimal performance of your vehicle's Top 10 Best Differential Repair in Denver, CO - July 2024 - Yelp - Key Transmission & Gears, Advanced Transmission Center, Colorado Axle N Gear, Western Drivetrain, Strictly Automotive, Bluewater Performance, Pro Import Denver, Saul’s Autotek, The Edge Automotive Upgrade your vehicle's performance with our reliable used differential. Rear differential leak repair costs can range depending on whether they are light repairs such as replacing the oil seal, or adjusting backlash, or if you need to overhaul and rebuild the differential. SE Corner Mississippi & Pierce 1194 S. 73 or 4. 5 Hydraulic Bumpstop Kit. Should you need experts to fix your car’s differential system, there’s no need to go out of Salt Lake City. Mar 31, 2015 · Being the single most used rear differential on the planet, we’ll show you want goes into saving an aging GM 8. Advance Driveline is an auto shop in the Orlando Florida area that provides high-quality services. 0T AWD. The Differential and Axle Shop specializes in front and rear differential and axle repair on all applications ranging from daily drivers to drag cars, hotrods to off-road trucks and all vehicles and applications in between, stock or modified. 52 reviews and 18 photos of ARIZONA DIFFERENTIAL "I had just moved back to Phoenix and was in dire need of a good shop that could work on a 1977 Corvette rear end. Some people refer to this differential as the rear diff or simply the rear end. We carry the most stock in Used Axles or Rear Ends for Ford, Chevy, Dodge, Jeep, GMC, Honda, Nissan, Chrysler, Hummer, Land Rover, Toyota, Mazda, and many more. Schedule Service Huge Inventory of Gear, Axle & Differential Parts. 5-Inch 1999-2006. info@jawsgear. If that gets damaged by an improper repair then you will need to take your differential or rear Differentials. com, so we can discuss your particular Mercedes Benz (we sell MB parts for any MB car back to model year 1960) and the best differential components for your car. Differential Services. Go with a low mileage used rear diff, as far a I know a rebuild on a Jeep is 800 and the warrenty is about 5000 miles. tagPlaceholder Tags: rebuild differential , rear differential repair 304-624-1515 In addition to differential inspections, we offer differential rebuilding and differential fluid services. $300 seems like a lot, should be about 50 for the emergency brake cable, takes about 10 mins it run it. 3 yr/36,000 mi Warranty & FREE Diagnostics. We carry an extensive inventory of new differential components for your light-, medium- and heavy-duty vehicles. 5431-A, Stationers Way. We specialize in new and remanufactured transmissions, differentials, steering gears, electronics, mechatronics, driveshafts, and heavy-duty truck parts. Related Articles – We specialize in complete axle rebuilds including ring & pinions, bearings, seals and differentials. Mon-Thu 8am-5:30pm, Fri 8am-5pm EST Oct 1, 2011 · LBM Autoparts has introduced a repair kit for the BMW front differential used in 2004-later X-drive models. My differential was leaking months after I paid the last shop bank to repair. Gear oil is nasty stuff, mostly in smell. Let us change your open carrier to a limited slip. A rebuilt axle assembly is a used axle or core rear axle assembly that has been taken down to a bare housing and had all of the internal parts replaced. Hours: Mon. Rebuilt Fabco Differentials and Parts. Buy Your differential at a warehouse discount price. Here’s a few tips on how to rebuild a rear differential when the time comes for your GM vehicle. We have thousands of satisfied customers in every corner of the World Apr 29, 2019 · Arizona Differential Specialists has been serving the Phoenix area since 1997. com or fax The good news is that there’s really only one thing you need to know when it comes to your car or truck’s differential: The technicians at your local Cottman center understand everything there is to know about differentials… even the limited slip differentials used in many of today’s cars or trucks. com is your new home for everything that has to do with Used Axles or Rear Ends for sale. Affordable prices and 6-Month Warranty. No matter where you are in the country, Overdrive Rebuild Inc. Our specialized services can be used to upgrade your 4×4, repair your company’s multi-vehicle fleet, or maximize your muscle car’s GRS Drivelines 930 West 2100 South Salt Lake City, Utah 84119. com or fax at (619)447-1588 1488 Pioneer Way #9 El Cajon, California 92020 info@sdgearaxle. Therefore LMB decided to develop a repair kit with all the parts needed to rebuild the differential properly. Obviously, the less intrusive the repair is a rear differential oil leak before it causes other issues Top 10 Best Differential Repair in Phoenix, AZ - July 2024 - Yelp - Arizona Differential Specialists, No Coast Differential, A-1 Differential Of Arizona, John Jay Automotive, Arizona Differential, Arizona Driveshaft, Scott Repman's Truck & Auto Repair, AMC Automotive, Bullet Proof Off-Road & Auto, All About Transmissions Mar 12, 2020 · Trust your rebuild to the repair shop trusted by classic car owners - CMR Rebuild - 304-624-1515. Front and rear differentials should be serviced every 3 years or 50,000 miles. 841. If fluid change no longer works for your vehicle, our technicians are ready to replace the entire differential system. Many parts we use are original equipment manufacturer (Ford Motorsport, AAM, GM, DANA-Spicer, Mopar), Timken, Koyo, National and CR Many axle parts and Top 10 Best Differential Repair in Vancouver, BC - July 2024 - Yelp - Pacific Driveline, i W E Rear Ends OnlyCom, Bert's Automotive Transmissions, Tremblay Motors, Stan's Transmission Centre Ltd, Lee's Automatic Transmissions, Jiffy Lube, On Site Tune & Brake, Mister Transmission, Leah's Automotive Top 10 Best Differential Repair in San Jose, CA - July 2024 - Yelp - Almaden Auto Repair, Gearmaster, Rearend Specialties, Bay Area Differential And Gear Garage, Mike's Transmissions, JB Automotive, El Camino Auto Transmissions, Advanced Trucks, Leale's Transmissions & Auto Repair, MS Auto Gears East Coast Gear Supply. A differential serves three functions - it lets the engine power turn the wheels, it slows down the rotation in the transmission to it sends power to the wheels and allows them to rotate at ‘different River City Transmissions - Does your vehicle require differential repair or a full rear end rebuild? Our ASE-certified experts provide free estimates. Definately call around for estimates, but first get a detailed estimate from this shop so you know what to ask them to do. Then we replace all used seals. " Top 10 Best Differential Repair in Fresno, CA - July 2024 - Yelp - Fearless Gear, Payless Transmissions & Clutch, Gateway Automotive Repair, Axle Pros, Felix Automotive Repair, No Limit Auto Services, Dicks Automotive, Four Wheel Drive Center of Fresno, Transmission City, Circle Automotive Services The interior of the shop was filled with beautifully painted rebuilt differentials and transfer cases lined up on spotless shelves and racks. Top 10 Best Differential Repair in Colorado Springs, CO - July 2024 - Yelp - The Diff Shop, The Differential Man, Drive Line Service Of Colorado Springs, Transmission Clinic Of Colorado Springs, Autosmith, Best Western Transmission, Altitude Offroad, Hellem's Auto Repair, National Differential, Fat Boyz Motorsports The differential allows the wheels to turn at different speeds while maintaining control. Even minor rear differential repairs can lead to the failure of the differential. Differential oil, also called gear oil, is used to lubricate CONTACT US. - Fri. Top 10 Best Differential Repair in Boston, MA - July 2024 - Yelp - Ted's Transmissions and General Repair, German Performance Service, Rayteam Automotive- German Auto Specialsts, Gary's Automotive and Performance, Forest Hills Auto Service, Belmont Watertown Transmissions, Foreign Car Specialists, Arborway Auto Service, Sullivan Tire & Auto Service, Mike's Auto Repair We offer full service differential repair for your daily driver, hot-rod or restoration project, big truck or RV. 6729 E Independence Blvd Charlotte, NC 28212 (704) 987-8666. Pierce Lakewood CO 80232 8AM – 5:30PM Mon-Fri (303) 922-4102 (303) 922-4102 Explore our variety of axle products and services listed below: Rear Axle Products Ford Axles Chevrolet Axles Dodge & Chrysler Axles Dually & 1-Ton Axle Products Dually Axles F-350 Dually Rear Axles Ram 3500 1-Ton Axles Chevy 1-Ton Axles Damaged Axles Products & Services Bent Axles & Spindle End Repair Rebuilt Axle… Front & Rear Differential Repair Service. Call now at 866-552-0809. We are your heavy duty truck and equipment Top 10 Best Differential Repair in San Antonio, TX - July 2024 - Yelp - The Twisted Axle, Seymour's Garage, Bert's Gene Brown Transmission, Goose Auto Repair, UC Transmission Specialists, Joe's Diesel - N - Automotive Garage, Texas Truck Shop, Lorenzo’s Mobile Mechanic Service, Juke Auto, Performance Auto and Trans We specialize in American made (Ford, Jeep, Dodge, Chevrolet) rear axle and 4 wheel drive front axle rebuilding, regearing, and customizing. We are the best choice for customizing your car, truck, 4x4 or SUV for the real enthusiast. Our state-of-the-art shop in Salt Lake City is equipped with advanced technology and staffed by experienced technicians dedicated to ensuring the optimal performance of your vehicle's Top 10 Best Differential Repair in Chico, CA 95927 - June 2024 - Yelp - Nor Cal Rods And Rides, Precision Auto Repair, Doctor of Motors, Boradori Automotive, Chuck Patterson Auto World, Glende Polaris Yamaha, ET Muscle Cars, GMC of Chico, Jiffy Lube Our service includes a thorough inspection of the differential fluid for impurities, checking the differential casing for leaks, and assessing all parts for wear. Four wheel drive vehicles are equipped with a differential in front and back, while rear wheel drive vehicles are equipped with a differential in back. Call 800-728-4236 Today. Drivetrain Specialty Shop 10689 Tesshire Dr, Affton, MO 63123 The local auto repair shop for differential service The mechanics at CMR Rebuild can help with your front differential or rear differential. Live Parts Experts. 2009-2011 Chevrolet Silverado 1500 Rear Axle Assembly OEM 162K 3. We offer 6 months warranty on differential rebuilds. Call (407) 299-1100. A Differential rebuild shop that knows diff’s is the right choice, sometimes the best option is not right around the corner. We offer complete differential repairs as well as custom diff reconditioning & rebuild. We also repair or rebuild transfer cases. We are proud to offer this remanufactured 9. Phone: 801-972-1753 Toll-free: 1-800-595-1753 Email: Fax: 801-973-8119 Top 10 Best Differential Repair in Oklahoma City, OK - July 2024 - Yelp - Gary's Auto Repair & Differential Specialist, A & A Transmission, Don's J & J Garage, K & C Automotive Repair, Hyde Automotive, Wicker mobile mechanics, Advanced Transmission & Axle, Silverado Road Service Diesel & RV Repair Shop, Gene's Automotive, Edmond Motorwerks Diff King is a car differential specialist shop in Australia. If you have a rear-wheel drive vehicle, the differential is on the rear axle. This forward–thinking strategy is key to prolonging your differential’s health and avoiding expensive future repairs. World wide International shipping. He diagnosed my vehicles differential problem repaired it and finished the repairs promptly, for a reasonable price. Top 10 Best Differential Repair in Lubbock, TX - July 2024 - Yelp - Joe Jackson Transmission Services and Auto Repair, Prock Automotive, American Differential, McWhorter's, Brandon's Auto Repair & Diesel Service, Allstar Automotive, Midas, Frank Brown Honda, Master Lube Express, Bigham Automotive & RV Service Center Top 10 Best Differential Repair in Houston, TX - July 2024 - Yelp - Houston Ring & Pinion, Circle D Transmission, American Rebuilders, Build Right Transmission, A 1 American Transmission & Automotive, IDB Racing, Steven's Auto Service, Christian Mobile Mechanic, Sam's Auto, H-Tech Auto Top 10 Best Differential Repair in Albuquerque, NM - July 2024 - Yelp - Mike's Transmissions, Silver Star Auto Haus, The Shop Automotive LLC, Universal Transmission, T M Transmission & Differential, Price Transmissions, Super 6 Tokyo, By The Book Diesel & Auto Repair, Budget Transmission Masters, Zia Automotive Axleshopper. 10 gear ratio, and limited Memphis, Tennessee residents can count on Houston Rebuilt Axles to repair/rebuild their axle and ship it back to their door with liftgate services. Differential repair, service, and rebuilding by ASE Master Techs at Auto Service Experts San Antonio Repair Shop. 5” 10-bolt rear end. For rear axles that are being rebuilt, we use meticulously inspected refurbished axle shafts. Rebuilt Rear Axle Assembly. When purchasing a rebuilt axle assembly, it is important to note there are differences between a rebuilt axle, reconditioned rear axle and a repaired rear axle. Diff Trans NSW Pty Ltd - Differentials specialists in Sydney, Call us on 1300 723 433 for differential rebuild and diff reconditioning in Sydney Top 10 Best Differential Repair in Tulsa, OK - July 2024 - Yelp - Harmon 4 Wheel Drive, Danny's Differentials & Drive Train Service, O'brien Auto Performance, HHH Transmission, Stewart's Automotive, T Autocare Takedown, Hauck Tire & Car Care, Cartec Automotive Services, Hibdon Tires Plus, Don Carlton Honda we have the best rear ends in town! call us and see! 714. Axle and Differential repair in Houston. AMC Chrysler '21-'23 RAM TRX Billet UCAs with Delta Joint Pro & Rear 2. You might be surprised how cheap it is on a older rig. A differential is the mechanical device that divides the engine torque and allows each output to spin at a different speed. Cottman Transmission and Total Auto Care. in Brookfield, WI. This rear diff can be configured with either a 3. The rear end is full of it. We have all of them for your Car, Truck, Van or SUV. WE ARE THE LEADER IN DIFFERENTIAL PARTS & SERVICE. Colorado Springs, Colorado 80907 719-630-7476. When I arrived, I met Walt and he offered to give me a tour and explained how they could repair my truck and get me going in one day. Understand symptoms of a failing differential and related maintenance like fluid changes. It is linked to the transmission with a driveshaft. Find out more →. Sep 20, 2020 · Hello, I just thought I'd chime in and mention that I discovered I had a failed rear differential on my 2015 ATS 2. This includes repairs like replacing the wheel bearings. has over 30 years of transmission and differential rebuilding and repair experience. A-Affordable Transmissions Center rebuilds differentials fast with honest pricing and clean work. It has to be drained to get a peak inside. 5-inch Semi-Floating Rear Differential for the 1999-2006 Chevrolet 2500 Silverado Truck with Two or Four-Wheel Drive. Trans Tech Auto & Truck 4285 N Nevada Ave. We also service trailer axles and hubs. Rebuilt Spicer Differentials and Parts. The differential allows the drive wheels to rotate at different speeds in turns without the wheel binding or hopping. 919-672-2705. Southwest Metro Denver. These BMW X-Drive models have a common problem with noise issues, and the complete unit is costly. Sacramento, CA 95842 Freeway Transmissions, your trusted auto repair shop in Salt Lake City, Utah, offers expert differential service to keep your vehicle in peak condition. New axle shafts will also be used if necessary. Englewood driveline specialist serving Denver, Colorado, call Front Range Driveline at (303) 783-9954 today for a free service estimate! Rear differential noise. Transmission service Drivetrain Specialty Shop 10689 Tesshire Dr, Affton, MO 63123 Feb 16, 2024 · Key insights. Our in-house differential rebuild shop also offers industry-leading custom repair and complete remanufactured differentials to ensure we always meet or exceed your expectations. Front axle, rear axle, single or tandemwe can handle your differential needs. Rebuilt Rockwell Differentials and Parts. Having one of the largest selections of new and used differential parts in Arizona, we can surely handle your parts needs. Types of Rear Differential Repairs. Non dealer shops around here get about $700 to $900 for a open diff rebuild based on the current $85 and hour. Feb 27, 2023 · In fact, the term transaxle can be used interchangeably in these vehicles to describe the differential or transmission. Click the pages below, where you can schedule your service or request a differential service cost estimate: Differential Repair; Differential Fluid Change; Differential Service; We do Gear Setup too! Contact us about rear-end Jun 23, 2022 · Learn the average front differential replacement cost at a mechanic ($2,000-$4,000) or DIY ($800-$1,000) for parts and labor. Mon - Fri: 8:00am-5:00pm Saturday: 8:00am-12:00pm. 8:00 AM to 5:00 PM Closed Weekends . 42 Ratio LKQ (Fits: Chevrolet Silverado 1500) **See Full Description for IMPORTANT Vehicle Fitment** Pre-Owned : Chevrolet Top 10 Best Differential Repair in Portland, OR - July 2024 - Yelp - Radical Rearends, Automotive Drivetrain, AATCO Transmission & Transaxle, River City Transmissions, Ellis Motorworks, Pacific Motorsports, I-5 Driveline, Town Center Automotive, Marsh Transmission, Bill's Tech-Trans San Diego Gear & Axle (858) 449-5656 or by email at info@sdgearaxle. We rebuild and supply Differentials parts for domestic pick-up trucks and Jeeps, classic cars and trucks, Domestic heavy-duty diesel trucks. 13 reviews and 9 photos of MONTALVO'S DIFFERENTIALS & DRIVELINES "I took my truck to Montalvo's differential after two other repair shops attempted to repair it with no luck. We fix axles, precision gears, hubs, ring/pinions, driveshafts, and rear end repairs and rebuilds. It was really a pleasure to to deal with Juan. We use Timken to replace the seals on the axle shafts and carriers. Cottman Transmission and Total Auto Care of Charlotte. You can also call us at 765-282-1593 or email info@AdsitCo. Rebuilt Mack Differentials and Parts. Vehicles may have front-wheel-drive differentials, rear-wheel-drive differentials or all-wheel-drive differentials! Whether it be a rebuild, LSD install, ratio change or even a complete custom housing to suit your vehicle we've got you covered! We stock a wide range of new genuine, aftermarket and used parts for all types of diffs from ring and pinions, LSD units, lockers, open diff centres, axles, bearing/seal kits and much more! Top 10 Best Differential Repair in Sacramento, CA - July 2024 - Yelp - West Coast Differentials, Jaw's Gear & Axle, River City Differentials, Ring and Pinion Service, Emperor Auto Body & Performance, South West Tire Shop, S & H 4 Wheel Drive Service Center, Crab Auto, McElroy's Repair, Mr Transmission - Roseville When possible a differential specialist or differential rebuilder should do rear differential repair. 232 E Belt Blvd Richmond, VA 23224 (804) 272-1911. JASPER® Engines & Transmissions has been "Perfecting the Art of Remanufacturing" for 80 years and is the nation's largest remanufacturer of differential units in the nation. Mon. Want to experience The Weller Way? Call us at 800-872-6697 or shop online through our extensive inventory of complete assemblies and parts to maximize your uptime! This is how you know that you're bringing your vehicle to the best of the best for rear-end differential repairs. St Louis Transmissions drivetrains, differential, rear end work, bearing, rings, axle shifts ready to serve you in St Louis, Affton Mo. I discovered the differential problem at about 77,000km and at 3 years + 11 months - just prior to the end of the lease (I ended up buying out the car). Top 10 Best Differential Repair in Saint Louis, MO - June 2024 - Yelp - Quality Transmission Service, M T Schiele Transmissions, Al's Transmission, Axleboy Offroad, Crosno's Transmission, European Automotive Specialists, AAMCO Transmissions & Total Car Care, Hillco Auto & Truck Repair, Len's Auto Repair, McCausland Service Center Looking for Differential Repair and Rebuild in Jacksonville, FL? Call the Cottman auto repair specialists at 904-257-5538 today! With every certified Meritor Authorized Rebuilder, you gain access to high-quality Meritor parts and world-class processes that set the highest industry standard for rebuilt components. Top 10 Best Differential Repair in Chicago, IL - July 2024 - Yelp - Quality Transmission & Auto, Suburban Driveline, VL Auto Repair Inc, R&M Performance Auto Care, Norm's Automotive Clinic, Gearhead Auto Repair, Logan Square Auto Repair, ABM Auto Repair, Delgado's Auto Service, Bavarian Motors Check Your Rear Differential at Badger Truck & Auto Group. JASPER® remanufactures a complete line of Rear Axle Assemblies and Differentials including Dana, Chrysler, Spicer, Ford, Toyota, and GM for over 500 models and ratios! Nov 9, 2006 · I wouldent even guess what the dealer would charge to do a rebuild but Id say it would be cheaper to buy a complete new rear diff from the dealer. fx lw dj hm pp si ss eu nb ns