Timken NP423135 Manual Transmission Input Shaft Race - Outer

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Timken NP423135 Manual Transmission Input Shaft Race - Outer

Brand	Timken NP423135
Position	Outer
Fits	Ford · 2 vehicles

Tapered roller bearing component. Engineered for higher speeds, heavier loads, and longer life.

Compact design. Delivers radial and axial load capacity in a small space.

Replace cone and cup together to maximize reliability and life.

$50.65Free shipping

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Timken NP423135 Manual Transmission Input Shaft Race

Timken NP423135 is a manual transmission input shaft race built for durability in demanding drivetrain service. It is a direct-fit service part for select 1999 Ford F-250 Super Duty and Ford F-350 Super Duty applications with outer position fitment.

Key Features

Manual transmission input shaft race for transmission service
Timken tapered roller bearing component engineered for radial and axial load handling
Compact design for high-load operation in limited space
Supports longer service life when paired with the matching bearing component
Fits 1999 Ford F-250 Super Duty, outer
Fits 1999 Ford F-350 Super Duty, outer

Detailed Description

Timken NP423135 is part of Timken’s tapered roller bearing component lineup and is used in manual transmission applications where precise bearing support is required. For 1999 Ford F-250 Super Duty and 1999 Ford F-350 Super Duty models in the outer position, this race helps maintain proper bearing operation under both radial and axial loads. Timken recommends replacing the inner cone and outer cup together to support reliable service life, and NP423135 is the outer race component for that repair path.

This part number, NP423135, is a practical choice for transmission rebuilds and bearing service on Ford Super Duty trucks when the original race shows wear, scoring, or heat damage. The Timken NP423135 designation is commonly searched by buyers looking for a manual transmission input shaft race for 1999 Ford F-250 Super Duty and Ford F-350 Super Duty outer applications.

What It Helps Fix

Transmission noise caused by a worn bearing race
Rough or inconsistent bearing rotation in the input shaft area
Heat-related wear on the outer race surface
Metal-to-metal contact from pitting or scoring
Service issues during manual transmission rebuilds

Installation Notes and Tips

Inspect the matching cone and cup surfaces before installation. Timken advises replacing the inner and outer bearing components at the same time to help restore proper fit and service life. Confirm outer position fitment for your 1999 Ford F-250 Super Duty or 1999 Ford F-350 Super Duty before ordering, and verify the transmission application against the original part number NP423135.

Quality Assurance

Timken is a recognized global manufacturer of tapered roller bearing components, with engineering focused on load capacity, durability, and bearing support for drivetrain service.

This part fits 2 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Transmission	Position	Notes
1999	Ford	F-250 Super Duty	Manual	Outer	—
1999	Ford	F-350 Super Duty	Manual	Outer	—
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