Manley MAN221443-16 1.580 Dual Valve Springs

Manley MAN221443-16 1.580 Dual Valve Springs is listed by Motorstate as a Valve Springs for catalog matching by brand, part number, and product name. Use this source-backed listing when comparing Manley components in the Valve Springs category. The manufacturer part reference is 221443-16, while the Motorstate part number is MAN221443-16. Catalog description context: Valve Spring - NexTek - Dual Spring - 535 lb/in Spring Rate - 1.170 in Coil Bind - 1.580 in OD - Set of 16. No vehicle compatibility is stated here unless it is present in separate fitment data.