VALVE GP-GAS CONTROL 3977661 - Caterpillar

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(1) New Symmetrical 176-4168 Valve Bridge Assembly
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(2) Former 144-2913 Valve Bridge Assembly Adaptable To: The improved valve bridge assembly became effective in production on the truck engines with the following serial numbers:
C-10 (S/N: 3CS17521-UP)
C-12 (S/N: 2KS57560-UP)The new 176-4168 Valve Bridge Assembly can be used to replace the former 144-2913 Valve Bridge Assembly in the following truck engines:
3176B (S/N: 3NL1-UP; 7LG1-UP; 9CK1-UP; 9WK1-UP)
3176C (S/N: 2AW1-UP)
C-10 (S/N: 2PN1-UP; 3CS1-UP; 8YS1-UP; BEW1-UP)
C-12 (S/N: 1YN1-UP; 2KS1-UP; 9NS1-UP; BFH1-UP) Refer to Truck Engine News, SEBD6729, November 2000, "A New Valve Bridge Assembly Is Available For Engines Equipped With A Compression Brake" for information on engines that are equipped with compression brakes.