ARB Air Locker Differential, Dana 70/80 Rear, 37 Spline, High Speed for Ford F-250/F-350 Super Duty (1988-1997, 1999-2016)
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Warranty Information
Vendor warranty summary
ARB Warranty
At a glance: 5 years on Air Locker, 3 years on ARB-branded products, 1 year/25,000 miles on wear items
This is ARB's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: November 4, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| Air Locker (personal use) | 5 years, unlimited miles |
| ARB-branded products (personal use) | 3 years, unlimited miles |
| Wear items: bushes, bearings, shackles, pins, U-bolts, batteries, globes, gas struts | 1 year or 25,000 miles, whichever comes first |
| Air Locker & ARB-branded products (commercial use) | 3 years or 60,000 miles, whichever comes first |
| Wear items (commercial use) | 1 year or 25,000 miles, whichever comes first |
- Keep your NVMOS order confirmation — proof of purchase is required.
What's covered
- Defects in materials and workmanship from the purchase date
- Applies when the product is fitted per ARB's instructions and legal requirements and used for its intended purpose
- ARB chooses whether to repair, replace or refund
What's not covered
- Normal wear and tear
- Incorrect fitting or use beyond what the product was designed for
- Misuse, negligent operation or poor maintenance
- Modified products; accident or vandalism damage
- Competitive events such as racing or rallying
- Use in underground mining or other highly corrosive environments
- Consequential losses; liability capped at the purchase price
How to make a ARB warranty claim
- Contact ARB as soon as you find the defect
- Do not remove the product from the vehicle before contacting ARB
- Submit the online warranty claim form with your purchase receipt
- ARB reviews the claim and decides on repair, replacement or refund
ARB contact: Phone: +1 (619) 940-1769 · Claim page / support
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to ARB, and help it along either way.
Shop ARB at NVMOS
See all ARB products, lead times and FAQs →
Disclaimer: The information on this page describes ARB's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: ARB official warranty information. Last updated on nvmos.com: November 4, 2026. See our return policy for NVMOS's own terms.
About the brand
ARB is the Australian 4x4 company behind the Air Locker, and it builds most of what goes on an overland truck: bumpers, lockers, compressors, roof racks, awnings, fridges, drawers and recovery gear. NVMOS carries the ARB lineup for Toyota, Jeep, Ford, Chevy, GMC, Ram and Nissan trucks and SUVs.
Based in: Melbourne, Australia · Lead time: In-stock items typically ship in 24-48 hours; large items may ship by freight
Shop all 855 ARBWarrantyAll brands
Warranty terms are set by ARB, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
ARB Air Locker Differential, Dana 70/80 Rear, 37 Spline, High Speed for Ford F-250/F-350 Super Duty (1988-1997, 1999-2016)
This ARB Air Locker is a 37-spline, high-speed carrier for the Dana 80 rear axle with a 1.60 in. shaft, built for 3.73 and lower gearing. ARB lists it for the Ford F-350 from 1988 to 1997 and the Ford Super Duty F-350 from 1999 to 2016. It sits alongside the low-speed version for higher ratios.
| Spec | Detail |
|---|---|
| Fitment | Ford F-350 1988-1997; Ford Super Duty F-350 1999-2016 |
| Axle | Dana 80 |
| Position | Rear |
| Spline count | 37 |
| Shaft diameter | 1.60 in. |
| Carrier | High speed |
| Gear ratio | 3.73 and down |
Confirm the axle is a Dana 80 with 37 splines before ordering. Some 3.73 gear sets are thin and require the 4.10-and-up case, which is the low-speed part. ARB install instructions: download the PDF. Not sure it fits your build? Call real humans at (920) 249-7744 with your year, trim and setup and we will confirm it.
What axle does this Air Locker fit?
It is for the Dana 70 or 80 rear axle with 37 splines and a high-speed carrier. Check your axle and spline count before ordering, since lockers are not interchangeable between axles.
Which trucks is it listed for?
ARB lists the Ford F-350 from 1988 to 1997 and the Ford Super Duty F-350 from 1999 to 2016. It also lists Ford E-350 vans from 1988 to 1998, which this store does not cover.
What is the warranty?
ARB covers its own and Old Man Emu products for 3 years with unlimited miles (Air Lockers 5 years); wear items like bushes, shackles, pins and U-bolts are covered for 1 year or 25,000 miles.
Are install instructions available?
Yes. ARB publishes install instructions for this part number, and we recommend reading them before you start.
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Specifications
ARB Air Locker Differential, Dana 70/80 Rear, 37 Spline, High Speed for Ford F-250/F-350 Super Duty (1988-1997, 1999-2016) FAQs
What axle does this Air Locker fit?
It is for the Dana 70 or 80 rear axle with 37 splines and a high-speed carrier. Check your axle and spline count before ordering, since lockers are not interchangeable between axles.
Which trucks is it listed for?
ARB lists the Ford F-350 from 1988 to 1997 and the Ford Super Duty F-350 from 1999 to 2016. It also lists Ford E-350 vans from 1988 to 1998, which this store does not cover.
What is the warranty?
ARB covers its own and Old Man Emu products for 3 years with unlimited miles (Air Lockers 5 years); wear items like bushes, shackles, pins and U-bolts are covered for 1 year or 25,000 miles.
Are install instructions available?
Yes. ARB publishes install instructions for this part number, and we recommend reading them before you start.
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