Perkins 33817135 Rocker Cover Bolt Seal

The Perkins 33817135 Rocker Cover Bolt Seal is a genuine OEM sealing component designed to prevent oil leakage around the rocker cover fastening points. Installed beneath the valve cover retaining bolts, this seal helps maintain a secure and leak-free connection between the rocker cover and cylinder head assembly. Manufactured from high-quality oil-resistant rubber compounds, the 33817135 seal is engineered to withstand continuous exposure to engine oil, crankcase vapors, vibration, and elevated operating temperatures. Its resilient construction helps preserve proper sealing pressure while accommodating thermal expansion and contraction during engine operation. Used across various Perkins diesel engine families, this small but critical component contributes to maintaining engine cleanliness, reducing oil seepage, and ensuring reliable long-term performance.