Chevrolet Wiper Motors By the Number

Recently, I compiled a list of Chevrolet wiper motors and their respective numbers since I could not locate a simple guide on the internet. In my endeavor to gather the information, I learned that each year has a series of numbers associated with the casting, motor assembly, and cap. This is a work in progress. I've referenced GM's Assembly Manual to ensure accuracy but new than 1967 is harder to determine. If you are aware of any discrepancies or have additional information, please respond. I could not find any difference in the numbers when it comes to the motor having or not having a washer pump.

You'll notice that we re-manufacture many of the wiper motors and sell them on our website. You can click the Motor Assembly # and it will take you to the appropriate page. We have one of the largest supplies of re-manufactured wiper motors in the industry and specialize in quality restored parts.

NOTE: See illustrations below for ID number location

YEAR MODEL SPEED CASTING# MOTOR ASSM# CAP#

1955 PASS 1 5047787 N/A

1956 early PASS 1 5047906 N/A

1956 late PASS 1 5047905 N/A

1957 early PASS 1 5047981 N/A

1957 late PASS 1 5047988 N/A

1958 PASS 1 4903628 5044306 N/A

1959-1962 PASS 2 4904635 5044474

1960-1961 PASS 1 5044434 5045404

1962 PASS 1 5045302

1963 PASS 2 4911277 5044508

1963-1964 PASS 1 5045350

1963-1966 PASS 1 5045333

1964 PASS 2 4911277 5044568 4913253

1965 PASS 2 4914569 5044588 4918070

1965 PASS 1 5045486

1966 PASS 2 4915858 5044626 4914682

1966 PASS 2 5044626 4918070

1966 PASS 1 5045518

1967 PASS 2 4917644 5044670 4917505

1967 PASS 2 4917644 5044670 4914682

1968-1969 CORVETTE 2 4918077 5044683

1968-1971 PASS 2 4918077 5044712

1968-1971 PASS 2 4918077 5044712 4918070

1968-1971 PASS 2 4918077 5044712 4917505

1968-1971 PASS 2 4918077 5044681 4918070

ID NUMBER ILLUSTRATIONS

1955-1957: The Motor Assembly Number is located on the plate that faces downward when attached to the cowl.

1959-1967: The Casting Number is located on the side facing upward next to the seal.

The Motor Assembly Number is located on the end of the canister (not all years displayed this number). This is also the GM number referenced in the GM Assembly Manual.

The Cap Number is located on the top of the cap. There are a number of years that use the same cap number.