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ARB RD166 Air Locker Locking Differential Complete Kit

(Ford F-250 Super Duty 1999-2022, F-350 Super Duty 1999-2022, F-250 1976-99, F-350 1978-97, E-350 Super Duty 1999-2008, E-150 2008-13 + 51 more models)

Part of: ARB Air Locker Locking Differential Complete Kit

Other options in this family: ARB RD105 ARB RD104 ARB RD140 ARB RD100 ARB RD147

Manufacturer

Picture for manufacturer ARB

Part Number

RD166
14 reviews
Sale Price

$1,399.95

1 left at this price

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Usually delivered within 2 days

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FREE SHIPPING

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No Hassle Returns

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Fitment guaranteed

Fitment guaranteed

Product Details

The ARB RD166 Air Locker is a pneumatically-activated locking differential designed to provide maximum traction in challenging off-road conditions. When engaged, the Air Locker physically locks both wheels on an axle together, forcing them to rotate at the same speed and delivering 100% of available torque to both wheels regardless of traction conditions.

Key Features:

  • On-demand activation via dash-mounted switch—unlock for normal driving, lock for maximum traction
  • Pneumatic operation delivers reliable engagement without electronics in the differential housing
  • Seamless integration maintains factory ride quality and handling on-road
  • Forged steel internal components built for extreme-duty applications
  • Complete kit includes replacement differential carrier, activation switch, air solenoid valve, air line, and bulkhead fittings

ARB Air Lockers are trusted worldwide as the premier traction solution for serious off-road enthusiasts, offering the mechanical strength to handle rock crawling, mud, sand, and snow while maintaining daily drivability. The RD166 provides the confidence to tackle obstacles that would stop open or limited-slip differentials.

Products specifications

Fits

Ford F-250 Super Duty 1999-2022, F-350 Super Duty 1999-2022, F-250 1976-99, F-350 1978-97, E-350 Super Duty 1999-2008, E-150 2008-13, E-250 2003-14, E-350 Econoline 1975-98, F-250 HD 1997, E-250 Econoline 1986-2002 + 47 more models

Prop 65

No

Fitment Info 2

Axle: Dana 60; Position: Rear; Shaft: 1.50 in; Spline: 35; Ratio: 4.56 Up

Fitment Info 3

Axle: Dana 60; Position: Front; Shaft: 1.50 in; Spline: 35; Ratio: 4.56 Up

Fitment Info 1

Axle: Full Float Dana 60; Position: Rear; Shaft: 1.50 in; Spline: 35; Ratio: 4.56 Up

Color

Silver

Material

Steel

Awesome love the site

Hello

Easy and fast

Simple fast please leave me tracking number

First time buyer. So far so good.

1

Excellent product and service from start to finish.

Great experience and the price was the best.

Autoplicity has a wide selection of parts and great prices. Fast shipping and great customer service.

It was very easy to find and buy this item because I have an amazon account. Thanks

After having trouble completing the payment process through Amazon, I was able to complete my payment information directly on the Autoplicty website and submit the order quickly. The process was easy and fast. They had the best overall price (item plus shipping) I could find on the net. The item was shipped promptly and arrived in great condition. A quality merchant all the way around.

Best price online, love the shipping discount that was offered! I installed the parts yesterday and everything was installed perfectly. Saved me over $400 buy buying my upper control arms here for my 04 Acura TSX. I am gonna bookmark the site to my favori

Autoplicity is awesome! Easy check out and quick shipping! Will buy from again!

Had a great first experience with Autoplicity. I ordered my package late in the day on Wednesday and it was at the front door Thursday! Another big plus is that their prices are hard to beat. Won't have a problem ordering from them again!

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