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Lockheed Caliper Piston Seal, specify size

Click for a larger picture of Lockheed Caliper Piston Seal, specify size

Keep your AP Racing / Lockheed calipers working properly by rebuilding with these genuine AP Racing piston seals!

We offer the piston (fluid) seals separately for all common piston diameters used in AP Racing/Lockheed calipers. These seals are manufactured specifically for racing use. Sold individually.

Note 1: These seals are for AP/Lockheed seal-in-bore calipers only. They do not fit AP Racing seal-on-piston calipers or any other brand of calipers. Brakes are a critical safety component. We strongly recommend against trying to use these seals in other brands of calipers, even if the nominal piston size is the same. The results of brake system failure can have devastating effects!

Note 2: These seals get compressed to size when they are installed in the caliper bore. This is required for a tight seal. They will be slightly oversize (up to about 0.10" larger than the nominal size) when they are loose. They will not fit tight against the piston until they are installed in the caliper bore.

AP/Lockheed Seal ID
Bore Size Identifying Stripes AP Part No. Notes
1.125 (28.6mm) 1 Red Stripe CP4900-169 Bore D
1.250 (31.8mm) 3 Red Stripes CP4900-168 Bore E
1.375 (34.9mm) 1 Red Stripe CP4900-166 Bore G
1.500 (38.1mm) 2 Red Stripes CP4900-164 Bore J
1.625 (41.3mm) 1 Red Stripe CP4900-163 Bore K / LD19
1.750 (44.5mm) 3 Red Stripes CP4900-162 Bore L / LD20
2.000 (50.8mm) 1 Red Stripe CP4900-160 Bore N
36mm 3 Red Stripes CP4900-165 Bore H / LD65

Seals are sold individually.

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.

Condition: New
SKU: 86027

Lockheed Caliper Seal, 1 1/8 inch dia.

$19.99In Stock

Condition: New
SKU: 52229

Lockheed Caliper Seal, 1 1/4 inch dia.

$19.99In Stock

Condition: New
SKU: 29497

Lockheed Caliper Seal, 1 3/8 inch dia.

$19.99In Stock

Condition: New
SKU: 29498

Lockheed Caliper Seal, 1 1/2 inch dia.

$19.99In Stock

Condition: New
SKU: 29499

Lockheed Caliper Seal, 1 5/8 inch dia. (LD19)

$19.99In Stock

Condition: New
SKU: 29500

Lockheed Caliper Seal, 1 3/4 inch dia. (LD20)

$19.99In Stock

Condition: New
SKU: 29501

Lockheed Caliper Seal, 2.00 inch dia.

$19.99In Stock

Condition: New
SKU: 29502

Lockheed Caliper Seal, 2 1/8 inch dia.

$19.99In Stock

Condition: New
SKU: 29503

Lockheed Caliper Seal, 36mm dia. (1.42 inch) (LD65)

$19.99In Stock
Related Product Groups
AP / Lockheed Brake Caliper Parts