Browse our selection of quality radiator cap tester adapter parts designed specifically for your Plymouth Road Runner. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
Base
Convertible · Coupe · Hardtop
V8 4.5L · V8 5.2L · V8 5.6L · V8 5.9L · V8 6.3L · V8 6.6L · V8 7.0L · V8 7.2L
Automatic · Manual · U/K
