EFI Throttle Body O-Ring 05-10 Hemi 6.1L

The EFI Throttle Body O-Ring for 2005–2010 Hemi 6.1L engines is a critical sealing component that prevents vacuum leaks and fuel vapor escape at the throttle body interface. As a mechanic, you know that even microscopic leaks in this area can cause idle instability, rough running conditions, and check engine lights that are frustratingly difficult to diagnose. This genuine MAHLE ORIGINAL/CLEVITE o-ring restores the factory seal, eliminating air bypasses that compromise fuel trim and engine performance. Whether you're rebuilding a throttle body after carbon cleaning or replacing a worn seal during routine maintenance, this o-ring is essential to maintaining proper EFI system operation on these legendary 6.1L Hemi powerplants.

Engineered by MAHLE ORIGINAL and distributed under the CLEVITE brand, this o-ring is manufactured to OEM specifications with precision elastomer compounds that resist fuel contamination, heat cycling, and chemical degradation inherent to modern EFI systems. The seal's geometry is precisely dimensioned to fit the throttle body groove without over-compression or slippage, ensuring a reliable barrier between intake manifold vacuum and combustion chamber pressure. Over time, exposure to ethanol-blended fuels and repeated thermal cycles cause OEM seals to harden and lose elasticity, allowing minute air leaks that throw off the engine computer's fuel and ignition calculations. Replacing this single component often resolves driveability issues that would otherwise require expensive fuel system diagnostics or throttle body replacement.

This o-ring is the go-to solution for 2005–2010 Dodge Ram trucks, Jeep Grand Cherokee SRT8, and Chrysler 300C owners experiencing vacuum-leak symptoms like hunting idle, flat spots off idle, or intermittent P0101 (Mass Air Flow) codes. Installation requires only throttle body removal—typically a 30-minute job with basic hand tools—and no specialized equipment. Keep one in your shop drawer for quick diagnostic work or include it as a preventive replacement during any upper-intake manifold service. OEM-quality parts like this o-ring deliver reliability at a fraction of full throttle body replacement cost while restoring your Hemi's crisp response and smooth idle quality.