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Yukon Gear & Axle YP FSF9-33 Steel Spool Ford 9 Inch 33 Spline

(Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1968-74, F-100 1957-83 + 18 more models)

Part of: Yukon Gear & Axle Steel Spool Ford 9 Inch

Other options in this family: Yukon Gear & Axle YP FSF9-31 Yukon Gear & Axle YP FSF9-35

Manufacturer

Picture for manufacturer Yukon Gear & Axle

Part Number

YP FSF9-33
6 reviews
Sale Price

$431.46

4 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Yukon Gear & Axle YP FSF9-33 is a high-performance steel spool designed specifically for Ford 9-inch differentials with 33 spline axles. This spool provides 100% power distribution to both rear tires at all times, making it ideal for drag racing, rock crawling, and other competitive motorsports applications where maximum traction is essential.

Key Features:

  • 2-1/4 inch deck steel spool construction for Ford 9-inch differentials
  • Compatible with 33 spline axles
  • Uses 1.785 inch journal bearings with 45-degree angle
  • Manufactured from high-quality steel for superior strength and durability
  • Lower cost alternative to selectable lockers
  • Ensures equal power delivery to both wheels at all times

Important Installation Notes:

Spools are designed for off-road and racing use only and are not recommended for street-driven vehicles. Because spools provide constant power to both wheels, they eliminate differential action, which can cause tire wear and handling difficulties during cornering on paved surfaces. This spool is engineered for maximum performance in competition environments where traction and durability are critical.

Backed by Yukon Performance's one-year warranty against manufacturing defects, the YP FSF9-33 delivers professional-grade performance for serious enthusiasts and racers.

Products specifications

Fits

Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1968-74, F-100 1957-83, Fairlane 1957-70, Ranchero 1957-79, Falcon 1960-70, Galaxie 1959-67, Gran Torino 1972-76 + 13 more models

Axle Type

Ford 9 in.

Position

Rear

Great communication and fast shipping using FedEx Home. My packages can even be delivered on Saturday. Great prices on hard to find parts. I would definitely buy from again. Thanks

I just received my Knn filter. Shipment was on time. The box look beat up and deformed with a lot of tapes but the filter seems to be in good condition.

good

My experience was great, was very quick to get order done.

Excellent service. I called in Monday for a hard to find item which I had ordered from several other online shops who despite saying were In Stock online were not actually in stock at all and the orders were canceled after waiting a week to find out. They had the item in stock as listed on their website and shipped the next day. The price was the cheapest of anyone who actually had the item in stock by a substantial amount.

Best price anywhere for a brand name item. Fast inexpensive shipping!

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