Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Yukon Gear & Axle

Yukon Gear Trac-Loc For Ford 8in With 31 Spline Axles. Street Design

SKU: YUKYDGF8-31-SM

Differential Carriers

YUK Trac-Loc...

Yukon Gear Trac-Loc For Ford 8in With 31 Spline Axles. Street Design

Yukon Gear & Axle

Yukon Gear Trac-Loc For Ford 8in With 31 Spline Axles. Street Design

SKU: YUKYDGF8-31-SM

Differential Carriers

YUK Trac-Loc...

A$1,175.17
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

Added to cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Yukon Gear Trac-Loc For Ford 8in With 31 Spline Axles. Street Design

Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.

Additional Information

8in. Ford Yukon Trac-Loc with 31 Spline; Limited Slip; Smooth Design for Street/Everyday Use-2 Preload Springs; 4 Pinion Design

Part Type

Limited Slip Differential Assembly

Additional Application Notes
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Rear; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Rear; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit
• Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Rear; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in.
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Rear; Street; For Use w
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Rear; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip; Ford 8 in. Rear; 31 Spli
• Yukon Dura Grip; Ford 8 in. Rear; 31 Spline; Limited Slip; 2 Spring Smooth Setup; Requires Longer Trac-Loc Bolts; Uses LM102949/ LM102910 Carrier Bearings Rear; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;~Yukon Dura Grip;
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Rear; Street; For Use w/Light Springs; 31 Splin
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Ki
• Street; For Use w/Light Springs; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit Ford 8 in.; 2 Spring Design For Steet Use; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit with LM102949/ LM102910 carrier bearings;

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-08 14:41:08

Features

  • 4 Pinion Design
  • All units are backed by extensive product testing and state-of-the-art software design
  • Fits 8 in. Ford w/31 Spline Axles
  • Fits 8" Ford with 31 Spline Axles
  • Fits all Gear Ratios
  • Fully rebuildable design and proudly assembled in the USA
  • Gears are cut to provide the strongest teeth possible in any terrain
  • Limited Slip Differential w/Composite Clutches
  • Limited Slip Differential with Composite Clutches
  • Smooth Design for Everyday Use
  • Yukon Dura Grips feature 4320 chromoly spider gears for ultimate durability

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

AAP Selling Package Quantity UOM:EA
Package UOMEA
Package Qty1
Assembled:Yes
Axle Shaft Spline Quantity:31
Axle Type:semi Floating
Bolt Hole Quantity:10
Case Included:Yes
Description:8in. Ford Trac-Loc with 31 Spline; Limited Slip; Aggressive-2 Preload Springs
Differential Brand:FORD
Gear Ratio:All
Heat Treated:Yes
Material:Steel
Part Number:yukYDGF8-31-SM
Title:8" Ford Trac-Loc with 31 Spline; Limited Slip; Smooth - 2 Preload Springs
Type:Limited Slip Positraction

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:01:28

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Yukon Gear & Axle, YUKON GEAR AND AXLE, Yukon Gear And Axle (randys)
StreetFX SKU yukYDGF8-31-SM
SFX Item ID 4489075
Accounting SKU yuk-YDGF8-31-SM
Manufacturer SKU YDGF8-31-SM
Manufacturer UPC 883584260042
Alternative References YGA-26004

Yukon Trac-Loc for Ford 8" wtih 31 spline axles. Street Design

Yukon Gear & Axle Trac-Loc carrier cases are for Ford 8 in. and 9 in. housings and are available in street or race versions. These robust cases are the ultimate mechanical locking differentials, replacing your entire carrier assembly. Yukon Trac-Loc carrier cases feature a left case half of 1541H billet steel for increased strength, eliminating the weak point where most failures are found. The top half is made from forged steel. Whether your application is for the street or drag racing, Yukon Gear & Axle Trac-Loc carrier cases will have your rig roaring with performance.

Product Attributes
BrandYukon Gear & Axle
Manufacturer's Part NumberYDGF8-31-SM
Part TypeDifferential Carriers
Product LineYukon Gear & Axle Trac-Loc Carrier Cases
UPC883584260042
Differential Case Design TypeFord 8 in.
RemanufacturedNo
Aftermarket Carrier StyleClutch-type
Axle Shaft Spline Quantity31
Carrier MaterialSteel
Carrier Bearings IncludedNo
QuantitySold individually.
NotesLoaded carrier fits all gear sizes. Features 4320 chromoly spider gears, and composite clutches with 2 preload springs. Not intended for use with synthetic oil. Unit requires carrier bearing number LM102949, race number LM102910, and ring gear bolt number YSPBLT-014.

Compatibility

Loading compatibility information...

Keep shopping

More from Yukon Gear & Axle