Yukon Gear Steel Spool For Ford 9in w/ 31 Spline Axles

SKU: YUKYP_FSF9-31

Differential Spool

YUK Steel Spools...

Yukon Gear & Axle

Yukon Gear Steel Spool For Ford 9in w/ 31 Spline Axles

SKU: YUKYP_FSF9-31

Differential Spool

YUK Steel Spools...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.

Product Overview

Yukon Performance steel spool for 9" Ford with 31 spline axles. Spool uses 1.785" journal bearings. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.

Features and Benefits

Fits Ford 9 in. w/31 Spline Axles
Not recommended for street driven vehicles
Fits Ford 9" with 31 spline axles
Provides 100% traction to both wheels at all times
Provides 100 Percent Traction To Both Wheels At All Times

Product Details

AAP Selling Package Quantity UOM:	EA
AAP_UDA_12:	EA
AAP_UDA_22:	1
Axle Type:	Ford 9 in.
California Proposition 65:	Not Applicable
Color:	Bare
Description:	Yukon steel spool for Ford 9in. with 31 spline axles
Grade Type:	Performance
Heat Treated:	Yes
Material:	Steel
Mounting Hole Quantity:	10
Part Number:	yukYP FSF9-31
Position:	Rear
Spline Quantity:	31
Title:	Yukon steel spool for Ford 9" with 31 spline axles
WARNING CA Proposition 65 Required:	No
WARNING CA Proposition 65:	No

Application Summary

9"FORD 31spl STEEL SPOOL,1.785"JRNL

Part Type

Differential Spool

Data: v4.2 - Upd: 2026-10-16 20:08:04

Features

Fits Ford 9 in. w/31 Spline Axles
Fits Ford 9" with 31 spline axles
Not recommended for street driven vehicles
Provides 100 Percent Traction To Both Wheels At All Times
Provides 100% traction to both wheels at all times

Specifications

AAP Selling Package Quantity UOM:: EA
AAP_UDA_12:: EA
AAP_UDA_22:: 1
Axle Type:: Ford 9 in.
California Proposition 65:: Not Applicable
Color:: Bare
Description:: Yukon steel spool for Ford 9in. with 31 spline axles
Grade Type:: Performance
Heat Treated:: Yes
Material:: Steel
Mounting Hole Quantity:: 10
Part Number:: yukYP FSF9-31
Position:: Rear
Spline Quantity:: 31
Title:: Yukon steel spool for Ford 9" with 31 spline axles
WARNING CA Proposition 65 Required:: No
WARNING CA Proposition 65:: No

Reference Information

Brand Name/s	Yukon Gear & Axle
StreetFX SKU	yukYP_FSF9-31
SFX Item ID	4489981
Supplier Item Code	4489981
Manufacturer SKU	YP FSF9-31
Manufacturer UPC	883584320456
Alternative References	fsf9-31, yga-32045, 9in