Yukon Gear Ford 9in Differential w/Trac-Loc LSD Dropout Assembly 31 Spline

SKU: YUKYDAF9-370SVO-31

Differential

YUK Trac-Loc

Yukon Gear & Axle

Yukon Gear Ford 9in Differential w/Trac-Loc LSD Dropout Assembly 31 Spline

SKU: YUKYDAF9-370SVO-31

Differential

YUK Trac-Loc

Last Available from MFR. LAST ONE AVAILABLE from the manufacturer's distribution centre. Once sold, this item may not be immediately available again. The dispatch timeframe shown is an estimate based on historical orders for this part and is dependent on the manufacturer releasing the final available unit.

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Description

Yukon dropout assemblies are built by expert Yukon technicians and come complete, properly shimmed and backlashed to spec. All you do is install the third member into your diff housing, bolt on the diff cover, add fluid, and roll. This unit features a nodular iron case which improves rigidity and power handling, reducing deflection for consistent gear contact and a long service life. This assembly is upgraded with a Trac-Loc limited slip differential that improves torque bias and traction for maximum performance.

Product Overview

Features and Benefits

Fits Ford 9â€ differential
Does not include yoke
Fits Ford 9 in. Differential
Complete, fully assembled dropout
3.70 gear ratio
31 spline
Upgraded with Trac-Lok clutch-type limited slip differential
Complete; Fully Assembled Dropout

Product Details

AAP Selling Package Quantity UOM:	EA
AAP_UDA_12:	EA
AAP_UDA_22:	1
Axle Shaft Spline Quantity:	31
California Proposition 65:	WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Color:	Bare
Description:	Yukon Dropout Assembly for Ford 9in. Diff w/Trac-Lok LSD; 31 Spline; 3.70 Ratio
Finish:	Raw
Gear Ratio:	3.70
Grade Type:	Performance
Material:	Nodular Iron
Mounting Hardware Included:	No
Mounting Hole Quantity:	10
Part Number:	yukYDAF9-370SVO-31
Pinion Yoke Included:	No
Title:	Yukon Dropout Assembly for Ford 9” Diff w/Trac-Lok LSD, 31 Spline, 3.70 Ratio
Type:	Limited Slip
WARNING CA Proposition 65 Message:	WARNING: This product can expose you to chemicals including arsenic; which is known to the State of California to cause cancer. For more information; go to www.P65Warnings.ca.gov.
WARNING CA Proposition 65:	Yes

Application Summary

9" FORD 3.70 RATIO, 31spl T/L POSI, 3RD MEMBER ASSEMBLY (w/o Yoke)

Part Type

Differential

Data: v4.2 - Upd: 2026-10-11 08:24:03

Features

3.70 gear ratio
31 spline
Complete, fully assembled dropout
Complete; Fully Assembled Dropout
Does not include yoke
Fits Ford 9 in. Differential
Fits Ford 9” differential
Upgraded with Trac-Lok clutch-type limited slip differential

Specifications

AAP Selling Package Quantity UOM:: EA
AAP_UDA_12:: EA
AAP_UDA_22:: 1
Axle Shaft Spline Quantity:: 31
California Proposition 65:: WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Color:: Bare
Description:: Yukon Dropout Assembly for Ford 9in. Diff w/Trac-Lok LSD; 31 Spline; 3.70 Ratio
Finish:: Raw
Gear Ratio:: 3.70
Grade Type:: Performance
Material:: Nodular Iron
Mounting Hardware Included:: No
Mounting Hole Quantity:: 10
Part Number:: yukYDAF9-370SVO-31
Pinion Yoke Included:: No
Title:: Yukon Dropout Assembly for Ford 9” Diff w/Trac-Lok LSD, 31 Spline, 3.70 Ratio
Type:: Limited Slip
WARNING CA Proposition 65 Message:: WARNING: This product can expose you to chemicals including arsenic; which is known to the State of California to cause cancer. For more information; go to www.P65Warnings.ca.gov.
WARNING CA Proposition 65:: Yes

Reference Information

Brand Name/s	Yukon Gear & Axle
StreetFX SKU	yukYDAF9-370SVO-31
SFX Item ID	4492596
Supplier Item Code	4492596
Manufacturer SKU	YDAF9-370SVO-31
Manufacturer UPC	883584132165
Alternative References	9in