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Michigan Motorsports LS Oil Pan Oil Pressure Relief Valve Plug - Bypass Conversion Kit - Fits 2007-2013 Gen IV LS Engines - Fits LS3 L99 L96 L92 LMG LC9 L76 LH6 - Includes Crush Washer

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$16.99

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About this item

  • Bypass Conversion for Secondary Relief Valve – Replaces the factory rear-mounted oil pressure relief valve found in Gen IV LS oil pans, helping eliminate common clogging and pressure loss issues after AFM, DOD, or VVT conversions.
  • Direct-Fit Engineering – Designed to OEM specifications with M12 x 1.75 thread and 15mm hex head for quick, leak-free installation with no modifications required.
  • Durable Steel Construction – High-strength steel plug resists heat and vibration, while the included crush washer ensures a tight, lasting seal under pressure.
  • Essential for LS Conversion Builds – A must-have component when converting Gen IV LS engines away from factory AFM/DOD/VVT systems to ensure oil pressure consistency.
  • Broad Vehicle Compatibility – Compatible with a wide range of GM Gen IV LS engines including LS3, L99, L96, L92, LMG, LC9, L76, and LH6 from 2007–2013.


Ensure long-term oil pressure stability in your Gen IV LS engine with the Michigan Motorsports Oil Pan Oil Pressure Relief Valve Plug. Designed for performance and reliability, this plug eliminates the factory secondary relief valve — a known weak point prone to clogging and causing pressure drops, especially after AFM, DOD, or VVT systems are converted out. This plug is built from high-quality steel and includes a crush washer for a leak-free seal. It installs directly into the rear of the oil pan and should be torqued to 22 lb-ft for optimal sealing. Whether you're performing an LS swap, building a boosted application, or finishing a full AFM conversion, this component is a simple but critical upgrade to protect your engine's oiling system.