Caterpillar 4W8134 Rear Crankshaft Seal Assembly – Brakesaver Seal Group

The Caterpillar 4W8134 Crankshaft Seal Assembly is designed to help prevent engine oil leaks and protect critical engine components from external contamination. This Brakesaver seal group is engineered for demanding heavy-duty engine applications, providing reliable sealing performance under high rotational speeds, elevated temperatures, and continuous operating conditions. 

Product Specifications

• Brand: Caterpillar (CAT)

• Part Number: 4W8134

• Part Type: Rear Crankshaft Seal Assembly

• Assembly Type: Brakesaver Seal Group

• Inner Diameter: 154.18 mm

• Material: Plastic and carbon steel

• Primary Sealing Material: Plastic

• Application: Heavy-duty diesel engines

• Compatible Engine Models: 3408, 3408B, 3406B, 3406C, 3406E, C-15, C15, C-16

• Additional Application: TH43-C18 mobile hydraulic power unit

Specifications and compatible models are based on Caterpillar's parts catalog. Confirm application by engine serial number before purchase. 

Cross-Reference Part Numbers

Potential related or replacement references found in aftermarket listings:

• Caterpillar 4W8133

• Caterpillar 9N6600