Buy wp20400 - Genuine Cummins Gear Housing - wisentpartscenter.com

Description

Genuine Cummins 3945853 Gear Housing is an engine-mounted housing used around the timing gear train on Cummins ISC/ISL-family engines. It provides the rigid structure that keeps the camshaft, crankshaft, fuel-system drive, and other gear-driven components correctly positioned and aligned while protecting the gear train from contamination and supporting the surrounding engine components.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The 3945853 gives the engine timing gears a rigid and accurately machined mounting structure. Correct gear alignment is critical because movement or distortion in this housing can affect gear mesh, timing, bearing loads, and the operation of gear-driven engine components.

Issue Symptoms / When to Replace

A damaged gear housing may show cracks around mounting points, oil leakage at the housing-to-block joint, damaged threaded holes, or wear around shafts and gear mounting areas. Abnormal gear noise or repeated gear-alignment problems can also justify inspecting the housing, but the gears, bearings, shafts, and mounting surfaces should be checked before assuming the housing itself is the cause.

Brand Information

Cummins has manufactured diesel engines and engine components for more than a century and supports its engines with dedicated internal components, housings, gears, fuel-system parts, and service assemblies. Cummins catalogs 3945853 specifically as a gear housing, and this housing family is associated with the company’s ISC/ISL and related 8.3L/8.9L engine platforms.

Installation Notes

Make sure the block mating surface and locating dowels are clean and undamaged before installation. Use the ESN-specific Cummins procedure for housing alignment, gasket/seal application, and fastener torque.

How to Identify an OEM Part

Confirm 3945853 by the Cummins part number on the housing or original Cummins identification/packaging.

Why Buy 3945853 from Wisent Parts

  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.