Timken 473258 Differential Pinion Seal - Rear Outer
OE Quality 60-Day Returns
Timken

Timken 473258 Differential Pinion Seal - Rear Outer

Brand Timken 473258
Position Rear Outer
Fits Isuzu · 2 vehicles

Precision sealing design. Helps prevent lubricant escape and keep contaminants out.

Reinforced outer case. Helps resist installation damage and adds durability.

Contamination exclusion system. Helps block debris that can lead to leakage.

Cross-references BBB Industries 13876, Dorman - HELP 13875 and National 473258 for the same application. See all 3.

$18.45Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $18.45
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Differential Pinion Seal options

Timken 473258 Differential Pinion Seal

Timken 473258 is a differential pinion seal built to retain gear oil at the pinion area and block road debris from entering the driveline. It is a direct-fit service part for select 1991-1992 Isuzu Impulse rear outer applications.

Key Features

  • Precision sealing design helps control lubricant loss at the differential pinion area
  • Reinforced outer case resists installation damage and supports seal durability
  • Ribbed rubber inner diameter helps seal minor spindle imperfections and promotes seating
  • Internal contamination exclusion system helps keep debris out of the seal area
  • Vent holes promote lubricant flow around the seal lip to reduce heat build-up

Detailed Description

Timken 473258 is engineered for driveline sealing service where a stable seal is needed to keep lubricant in and contaminants out. For 1991-1992 Isuzu Impulse rear outer service, this differential pinion seal supports proper sealing at the pinion interface and helps maintain differential lubrication. This part cross-references National 473258 for the same application.

Common Problems This Seal Can Address

  • Gear oil leakage at the differential pinion seal area
  • Contamination entering the pinion seal interface
  • Seal wear caused by heat build-up around the lip
  • Leakage related to minor surface imperfections at the sealing diameter
  • Service replacement for a worn Isuzu Impulse rear outer pinion seal

Installation Notes and Tips

Inspect the pinion surface, housing bore, and surrounding components before installation. Clean the sealing area thoroughly and verify the seal seats evenly during assembly. For 1991-1992 Isuzu Impulse rear outer service, confirm the application and position match the removed part before installation. Timken 473258 should be installed with care to avoid distortion of the seal case or lip.

Quality Assurance

Timken designs oil and grease seals with sealing features intended to support reliable driveline service. The reinforced case, contamination exclusion features, and vented lip design reflect Timken’s focus on durability and controlled sealing performance.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
1992IsuzuImpulseAWDRear Outer—
1991IsuzuImpulseAWDRear Outer—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 13876Dorman - HELP — 13875National — 473258