STANDARD MOTOR PRODUCTS HR138
STANDARD MOTOR PRODUCTS part number HR138 is a horn relay in the Electrical-Switch & Relay system. This catalog matches it to 13 year-and-engine configurations from 1970 to 1979.
Verified fitment includes 1979 Checker Marathon 5.0L 305cid V8 ; 1978 Checker Marathon 5.0L 305cid V8 ; 1977 Checker Marathon 5.7L 350cid V8 ; 1976 Checker Marathon 4.1L 250cid L6 ; 1975 Checker Marathon 4.1L 250cid L6 , plus 8 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is STANDARD MOTOR PRODUCTS HR138?
STANDARD MOTOR PRODUCTS part number HR138 is a horn relay with published application data for 13 vehicle configurations from 1970 to 1979. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does STANDARD MOTOR PRODUCTS HR138 fit?
This catalog matches HR138 to 13 year-and-engine configurations from 1970 to 1979. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is STANDARD MOTOR PRODUCTS HR138 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. STANDARD MOTOR PRODUCTS HR138 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
AutoFactsDB is reader-supported. As an Amazon Associate, we earn from qualifying purchases made through links on this page — at no extra cost to you.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.