What does this seal do?

This seal fits on the sprocket shaft of your engine. Its main job is to prevent grease and oil from leaking out of the engine and to keep contaminants from getting in.

What are the dimensions of this seal?

The seal has an inner diameter of 1.750 inches, an outer diameter of 2.507 inches, and a thickness of 0.3130 inches.

Is this seal a direct replacement part?

Yes, this is a direct replacement seal for the left main bearing sprocket shaft on 1970 and later Big Twin models.

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Trusted Since 1957

Est. 1957

Specifications

Brand: S&S Cycle
Part #: 31-4010
UPC: 31-4010

S&S Cycle 1970+ BT 1.750in x 2.507in x .3130in Left Main Bearing Seal

Name: S&S Cycle 1970+ BT 1.750in x 2.507in x .3130in Left Main Bearing Seal
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-1970-bt-1-750in-x-2-507in-x-3130in-left-main-bearing-seal-t14-664574
Price: 14.09 USD
Availability: BackOrder

$14.09

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

S&S Cycle 1970+ Big Twin left main bearing sprocket shaft seal. Direct fit for your engine.

Key Features

Fits 1970 and later Big Twin models.
Main left bearing sprocket shaft seal.
Inner diameter: 1.750 inches.
Outer diameter: 2.507 inches.
Thickness: 0.3130 inches.

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About this part

Product Details

S&S Cycle is well-known for making performance engine parts for Harley-Davidson motorcycles. This left main bearing seal is a direct replacement part for 1970 and later Big Twin models.

This seal fits on the sprocket shaft and helps keep grease and oil where it belongs inside your engine. It measures 1.750 inches on the inside diameter, 2.507 inches on the outside diameter, and is .3130 inches thick. It's a well-built part designed to keep your engine running smoothly.