ARP 621-3750 SAE Bolt Kit 1/4-20 x 3.750 hex SS bolts ymm_1 200 HP naturally aspirated and

200 HP naturally aspirated and 860 HP at 30 psi boost

Link pipe set (SS) was tested and developed together with Slip-On Race Line (Titanium) system

Constructed from high-grade lightweight titanium

An optional Akrapovič Sound Kit and Downpipe / Link pipe set (SS) is available to upgrade the Evolution Line (Titanium) exhaust

Fits Following Engines: 351W Ford Small Block V8

ARP 621-3750 SAE Bolt Kit 1/4-20 x 3.750 hex SS bolts ymm_1 200 HP naturally aspirated andSpecifications Socket Size(s) 5 16 hex UHL 3. 750 Thread Length 1. 000 Grip Length 2. 750 Thread Diameter Pitch 1 4 20 Grip Diameter 1 4 Wrenching 5 16 Head Height 0. 255 Collar Diameter 0. 515