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  See more parts for Ford Bronco
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Yukon Gear & Axle Yukon Trac Loc Positraction for Ford 8.8 Inch 31 Spline Differential - YC F318

If you’re looking to beef up your ride’s performance, the Yukon Gear & Axle Trac Loc Positraction for the Ford 8.8” is a solid choice. This isn’t just some off-the-shelf part; it’s built tough and made to last. Each unit is cast and machined with precision, which means you’re getting a carrier that can handle the grind without skipping a beat.

Now, let’s talk specifics. This bad boy fits Ford models with 31 spline axles, which covers a lot of ground. Whether you’re working on a Bronco from the '80s or a F-150 that’s seen a few miles, you’ll find this carrier fits right in. It’s designed for semi-floating axles, so you know it’s going to hold up under pressure. Plus, it’s heat-treated steel, which adds that extra layer of durability you want when you’re pushing your vehicle to its limits.

  • Trac Loc Positraction: This feature gives you better traction by distributing power to both wheels, which is especially handy when you’re off-roading or dealing with slippery conditions.
  • Axle Shaft Spline Quantity: 31 splines mean it’s compatible with a range of Ford models, ensuring a snug fit.
  • Bolt Hole Quantity: 10 bolt holes, so you can secure it tightly without any worries.
  • Case Included: Yep, it comes with the case, so you’re not scrambling for parts.
  • Gear Ratio: Works with all gear ratios, giving you flexibility depending on your setup.

As for fitment, you’re looking at a wide range of vehicles that can benefit from this upgrade:

  • Ford Bronco (1983-1996)
  • Ford F-150 (1983-2014)
  • Ford Explorer (1991-2005 & 2007-2010)
  • Lincoln Navigator (1998-2002)
  • And many more!

So, if you’re serious about enhancing your ride’s handling and performance, the Yukon Trac Loc Positraction is a no-brainer. It’s built for the long haul and ready to tackle whatever you throw at it. Just make sure you’ve got those 31 splines, and you’ll be set!

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1983-1996
 Ford Bronco
1992-2011
 Ford Crown Victoria
2002-2014
 Ford E-150
1991-2001
 Ford E-150 Econoline
1991-1998
 Ford E-250 Econoline
1997-2001
 Ford Expedition
1991-2005, 2007-2010
 Ford Explorer
1983-1996, 1998-2014
 Ford F-150
1997
 Ford F-150.5
1978-1983
 Ford Fairmont
1979-1982
 Ford Granada
1979-1986
 Ford LTD
1987-1991
 Ford LTD Crown Victoria
1979-2014
 Ford Mustang
1990-2011
 Ford Ranger
1987-1988
 Ford Thunderbird
2003-2005
 Lincoln Aviator
1979-1980, 1982-1987
 Lincoln Continental
2006-2008
 Lincoln Mark LT
1980-1983
 Lincoln Mark VI
1984-1992
 Lincoln Mark VII
1993-1998
 Lincoln Mark VIII
1998-2002
 Lincoln Navigator
1981-2011
 Lincoln Town Car
1994-2008
 Mazda B-Series
1998-2001, 2003-2008
 Mazda B3000
1998-2001, 2003-2007
 Mazda B4000
1979-1986
 Mercury Capri
1979-1988
 Mercury Cougar
1975-1978, 1980-2011
 Mercury Grand Marquis
2003-2004
 Mercury Marauder
1997-2010
 Mercury Mountaineer
Yukon's mission is to build quality parts that exceed your expectations. We achieve this through state-of-the-art product design and an in-house engineering team. Our parts are then produced by leaders in OEM manufacturing and endure rigorous testing.
Yukon Gear & Axle ("Yukon") warrants the original retail purchaser that all Yukon products will be free from defects in materials and workmanship for the periods shown herein. Yukon makes no other warranty of any kind, express or implied. All other warranties, including but not limited to an implied warranty of merchantability or fitness for a particular purpose, are excluded. This warranty is offered provided that the Yukon product has been installed and maintained in accordance with Yukon instructions, and that it has not been subject to modification, accident, abnormal use or misuse. At Yukon's discretion, this warranty may be voided if installation of Yukon product(s) occurs on vehicles with tires that exceed Yukon Maximum Recommended Tire Size.

Upon notification of a warranty claim, Yukon shall investigate the claim of defect, and, in the event of a verified defect, shall, at their sole choice, either repair the defective product, replace it, or refund the purchase price.

This warranty does not cover, and Yukon shall not be liable for, incidental or consequential damages, including loss of time, road service charges, labor charges, inconvenience, loss of vehicle use, loss of revenues, or loss or damage to personal property (including loss or damage to vehicle parts due to the failure of the Yukon product)*. In addition, this warranty does not cover, and Yukon shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Yukon Gear & Axle products, except where such agreements are within the provisions of this Warranty statement. Also, this warranty does not cover damage to the axle caused by or facilitated by failure of a non-Yukon component.

This agreement offers you specific legal rights. You may also have other rights which vary from state to state.

YUKON WARRANTY BY PRODUCT

Spool
  • Length:As long as original purchaser owns vehicle in which Spool is originally installed
  • Notes:It is normal for Spools to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for Spool to function properly without premature wear.
Super Joint
  • Length:As long as original purchaser owns vehicle in which Super Joint is originally installed
  • Notes:Warranty coverage is for breakage of cross section or caps only. Failure by wear or galling is not covered.
YP - Series Products (other than Spool and Super Joint)
  • Length:One (1) Year
  • Notes:Covers parts for one year against manufacturers defects.
Front Axle (1541H)
  • Length:Ten (10) Years
  • Notes:Covers parts for ten years against manufacturing defects.
Rear Axle (1541H)
  • Length:Ten (10) Years
  • Notes:Covers parts for ten years against manufacturing defects.
Rear Axle 4340 (YA W)
  • Length:Limited Lifetime
  • Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
Front Axle (Series YA W)
  • Length:Limited Lifetime
  • Notes:Limited Lifetime warranty covering manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
Ring & Pinion Gear Set
  • Length:One (1) Year
  • Notes:Warrantied against manufacturing defects for one (1) year.
Positraction Differential
  • Length:One (1) Year
  • Notes:Exclusions apply, does not cover premature clutch wear or abuse. It is normal for Positraction differentials to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for differential to function properly without premature wear. Limited slip additive or appropriate friction modifier must be used with oil to reduce Positraction chatter.
Zip Locker (YZL)
  • Length:Six (6) Years
  • Notes:All Zip Lockers come with a six (6) year warranty against manufacturer defect, including any collaterally damaged parts and associated labor, up to $2,000*, for the first two (2) years. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
Grizzly Locker (YGL)
  • Length:One (1) Year
  • Notes:Covers the replacement of the unit and any collaterally damaged parts and associated labor, up to $2,000. Collaterally damaged parts must be submitted for inspection. Receipts for parts and associated labor must be submitted as well. Only claims deemed reasonable by Yukon Gear & Axle will be accepted. Offer may be discontinued without advance notice.
Yokes
  • Length:One (1) Year
  • Notes:Covers parts for one year against manufacturing defects.
Carriers (YC)
  • Length:One (1) Year
  • Notes:Covers parts for one year against manufacturing defects.
Tools (YT)
  • Length:One (1) Year
  • Notes:Covers parts for one year against manufacturing defects.
Install Kits
  • Length:One (1) Year
  • Notes:Includes BK, MK, PK, and YK. Covers parts for one year against manufacturing defects.
Spider Gear Kits (YPK)
  • Length:One (1) Year
  • Notes:One year against manufacturing defects. Exclusions apply, does not cover clutch wear in limited slip differentials.
YHC Drive Flanges
  • Length:Limited Lifetime
  • Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
Yukon Hardcore Locking Hubs
  • Length:Limited Lifetime
  • Notes:Limited Lifetime warranty covering manufacturing defects and breakage for as long as you own the vehicle. This warranty is not transferable to another party. "No Questions Asked" replacement for first warranty return, however, Yukon reserves the right to either replace the part or refund original purchase price after the first warranty claim. Yukon (through RANDYS Worldwide Automotive) makes final determination on warranty considerations
Driveshafts
  • Length:One (1) Year
  • Notes:Warrantied against manufacturing defects for one (1) year. Longer warranty is available through purchase of a Y.E.S. plan.

Installation Instructions

Click to view the Installation Instructions here

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