Engine ID and VIN Derivative Location

Engine ID and VIN Derivative Location

5.7L Engine Identification Numbers, LS1(c):

(1) Engine ID Number, Primary Location
(2) Engine ID Number, Secondary Location

The eighth digit of the vehicle identification number (VIN) is the engine code letter, which identifies the engine as a 5.7L V8 (VIN eighth digit: G) (RPO code LS1).

Stick-on labels attached to the engine, laser etching, or stampings in the engine block indicate the engine unit number/build date code.

The engine ID number will be located on the rear of LH cylinder head or the front part of LH oil pan rail (1).

5.7L Engine VIN Derivative Locations, LS1(c):

(1) Engine ID Number, Primary Location
(2) Engine ID Number, Secondary Location

The engine is also stamped with a VIN derivative number which will be located in either the primary or secondary location, as shown.