3S8520 Pre-Combustion Chamber Gasket

The 3S8520 is a pre-combustion chamber gasket used in Caterpillar equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The gasket is identified for installation in specified Caterpillar marine engines, truck engines, and wheel tractors. The applicable equipment models and series are listed below; use the machine model and part number when checking compatibility.

Fitment

• Marine Engine D334 — Caterpillar equipment
• Truck Engine 1674 — Caterpillar equipment
• Wheel Tractor 631E — Caterpillar equipment
• Wheel Tractor 633E II — Caterpillar equipment
• Wheel Tractor 637E — Caterpillar equipment

For the wheel tractor applications, the listed models are 631E, 633E II, and 637E. The engine applications identified for this part are D334 in the marine engine range and 1674 in the truck engine range. No additional machine models are specified in the available product data.

Specifications

The product dimensions and weight above are the listed package or part data supplied for SKU 3S8520. The available information does not specify gasket material, sealing compound, thread details, or the number of gaskets included. These parameters are therefore not provided.

The available product data identifies 3S8520 as the applicable part number for this gasket. No additional Caterpillar or supplier cross-reference numbers are specified.