Product Description Specifications CNC-machined for consistency, this 7 degree lightweight tool steel retainer features light weight, exceptional strength and wear characteristics. Fits Dodge V10 Viper engine with 1.290" OD springs such as our 26926 dual spring. Category: Engine Components>Valve Springs, Retainers Core: N LTL: N MPN: 1737-1 Proposition 65: Y Special Order: Y