Part: decompression decomp valve. Part # 503 71 53-01.

Condition: good used/working shape

Fits: Husqvarna 371, 372, 385 390 XP, 385xp 390xp 357, 365, 359 and Jonsered 2159, 2156 2171 2172 2186 2188 turbo chainsaws and some other models