Insert, Valve (3943450 OEM) is a heat-resistant genuine Engine Valve Component.
Precisely regulates intake air flow or exhaust gas discharge in the cylinder head, maintaining tight compression sealing during combustion.
Compatible with Cummins engine series: QSB 6.7. To prevent premature wear and ensure optimal engine lifespan, genuine replacement parts are strongly recommended.
Send a photo of your engine nameplate or serial number. Our engineers will verify compatibility in 5 minutes!
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