cp4518-jk1_1_resize_2.jpg
cp4518-jk1_1_resize_2.jpg
 

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AP Racing 8350 Standard 4 Piston Caliper Seal Kit 38.1mm/41.3mm (1.500"/1.625")

Part #: 08 04 919

Brand: AP Racing

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AP Racing seal kit for 8350 Standard 4 piston calipers

One seal kit needed per caliper

CP4518-JK kit includes:

2 x 38.1mm (1.5") high temperature piston seals

2 x 41.3mm (1.625") high temperature piston seals

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$63.59

24 In Stock: Ready to Ship  |  Add to Wishlist


 
Research Technical Specifications Wheel Fitment & Installation Reviews & Success Stories

Brake Caliper, Seals & Temperature

Because race brake calipers are sometimes subjected to very high and unpredictable operating temperatures, they must be examined and seals must be replaced on a regular basis to maintain efficiency and safety. Seal life is governed by time at temperature which should therefore be kept as low as possible by provision of cooling airflow. For guidance only AP Racing offer the following recommendations (temperatures measured on outside of caliper adjacent to logo): - Calipers that regularly run at up to 200°C - Re-seal every other event. - Calipers that run intermittently from 200°C to 220°C abd above - Re-seal as soon as possible. - Reduce "soak" temperatures after the car has come to rest where possible (e.g. do not leave foot on brake pedal when stationary with hot brakes) as this can cause excessive caliper temperatures.

Kit includes:

2 x 1.500" high temperature piston seals

2 x1.625" high temperature piston seals

REPLACING CALIPER SEALS

(wearing nitrile gloves is recommended)

IMPORTANT: DO NOT USE PETROLEUM, GASOLINE, OR MINERAL OIL BASED CLEANERS OR LUBRICANTS AS THESE WILL DAMAGE THE SEALS.

1. Soak new seals in brake fluid for a minimum of 30 minutes.

2. Clean caliper with warm soapy water and dry off.

3. With the pads removed, insert a brake disc or block into the center of the caliper. Using either hydraulic pressure or compressed air, carefully extend all pistons against the disc or block. Remove block and remove pistons.

4. Carefully remove old seals with a narrow blunt-edged tool. A dull pick works best.

5. Ensure that caliper bores, seal grooves and pistons are clean and free from debris and moisture. Cotton swabs work well here. Use only alcohol-based cleaning fluid.

6. Carefully fit replacement seal into groove in caliper body. Check seals are free from damage and correctly seated in groove, not twisted or kinked. If using angle cut seals, ensure paint dots are facing away from disc.

7. Wipe the outside of the piston with a small amount of brake fluid for extra lubrication. Carefully engage piston into caliper bore and, using your fingers, push pistons fully into body.

NOTE: Excessive force should not be necessary. If piston does not slide smoothly into bore, remove & check that seal has been fitted correctly.

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