HPS Performance Products HPS High Temperature Reinforced Silicone Coolant Bypass Caps, Black/Blue/Red Inside Diameter:1-3/16" (30mm) 2-Door Configuration - Sized and

2-Door Configuration - Sized and shaped specifically for 2-door platforms

You'll need fasteners appropriate for your truck's hub mounting points

900 BC Best for Late Model with 406+ c

4" diameter leading edge larger than stock throttle body - requires use of 4" ID silicone hose adapter or reducer

This isn't just a shorter throw—it’s a complete re-engineering of the OEM system

HPS Performance Products HPS High Temperature Reinforced Silicone Coolant Bypass Caps, Black/Blue/Red Inside Diameter:1-3/16" (30mm) 2-Door Configuration - Sized andDont let a flimsy rubber cap become the weak link in your engines cooling system. HPS High Temp Reinforced Silicone Caps are purpose built for enthusiasts who demand reliability. These caps are engineered to withstand extreme heat and pressure where ordinary vacuum caps would fail, providing a permanent, worry free solution for sealing coolant bypass and vacuum ports. Each HPS coolant cap is constructed just like our performance radiator hoses made