Wilwood Caliper Piston Spring .77/1.22 ODx1.00

Wilwood Caliper Piston Spring .77/1.22 ODx1.00

Marsoni

M251S

$17.62

Get it in 3 business days with 1 day shipping. Friday, May 29

Wilwood Caliper Piston Spring .77/1.22 ODx1.00Caliper Piston Knock Back Springs. Used in low brake pedal situations due to piston knock back caused by vibration, mount or spindle flex. Part # 300 2434 (1. 22 diameter) is used with Wilwoods conventional stainless steel pistons from 1. 62 to 1. 88 diameter. Spring use in stainless pistons require a relief cut not present in earlier versions of pistons. Please check your application before ordering.

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Used it in a pinch for stater relay... it works great. Be aware... Mine required metric sockets for the nuts... 10mm for large terminals - 3/8 was too tight and same for smaller terminals 7mm fit better than 5/16 that was too loose. The mounting holes are also spaced closer together than the OEM on a mercruiser 260 in a mid 1980's boat but easy to remedy with a 1/4" drill bit.

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Reviewed in the United States on August 4, 2023

Verified Purchase

Don

Lake Worth, US

★★★★★ 5

Fixed 4.3 Merc IO

Size: 96158T-1PCS

Engine wouldn't start reliably or consistently. I had no clicking either from the old solenoid even though it would start from time to time...motor starts perfect after install. Pretty easy install as long as you reconnect the right wires. This worked perfect!

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Reviewed in the United States on August 8, 2023

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Mr Sexy

Dallas, US

★★★★★ 5

Quality

Size: 96158T-2PCS

Worth the money. Quality. Fit good. Easy too install.

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Reviewed in the United States on September 21, 2025

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