1.25" Expansion Plug for 2012-2016 WK Grand Cherokee, JK Wrangler w/ 3.6L Engine, 1941-1945 MB, 1945-1971 CJ-2A, CJ-3A, CJ-3B, CJ-5, CJ-6, 1950-1963 M38, M38-A1, 1956-1964 FC150, 1966-1971 C101 Commando w/ 4-134 (2.2L) Engine