PRO TORQUE AXLE NUT

Name: 449-4973-NL - PRO TORQUE AXLE NUT
Brand: Stemco
SKU: 449-4973-NL
Price: 88.36 USD
Availability: InStock

The Stemco Pro-Torq spindle nut (part number 449-4973) is a one-piece, locking axle nut designed for drive axles on heavy-duty trucks. It uses an integrated keeper to provide precise and controlled bearing adjustment, which helps extend the life of wheel seals and bearings while reducing maintenance intervals. This nut replaces conventional jam nut and lock washer systems, and is typically installed when servicing wheel bearings or upgrading to a Pro-Torq wheel-end system. The -NL suffix is likely an internal dealer code, and the actual part is identical to the standard Stemco 449-4973.

$88.36

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Verified fitment

Meritor RT-, RP-, RS-series drive axles (34,000-46,000 lb)
Dana/Spicer D-series drive axles (34,000-46,000 lb)
Eaton DS/DST drive axles (34,000-46,000 lb)
Mack 50,000 lb drive axles
Navistar drive axles using 3-1/4-12 spindle threads

Fits 3-1/4-12 spindle threads. Requires 4-3/8 inch 8-point socket (OTC# 1917). Verify outer bearing cup/cone (580/572) and thread size before ordering. The -NL suffix may be an internal dealer code; the actual part matches Stemco 449-4973.

Specifications

SKU449-4973-NLBrandStemcoSupplierPost OnsiteCategoryBrakes & Wheel EndAvailabilityIn StockThread Size3-1/4-12Outer Bearing Cup/Cone580/572Tool Socket4-3/8 inch 8-point (OTC# 1917)Replacement KeeperStemco 450-4973Axle PositionDrive axle