1378911 Gasket | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta gasket from the inlet and exhaust system group, used to seal a mating joint against combustion gas and air leakage. It is the current replacement for the earlier gasket 418870 and serves MB20A, MB20B and MB20C marine engines. Supplied as a single gasket for renewal whenever the joint is disturbed during service.

🚤 Compatibility

• Year Range: Approximately 1960s-1970s

⚙️ Key Features

• OEM Volvo Penta part number 1378911
• System group: Inlet and Exhaust System
• Net weight approximately 0.045 kg
• Supersedes earlier part number 418870, which itself replaced 418859 and 418407
• Fits MB20 series marine engines
• Engine type: Volvo B18 / B20 pushrod inline four-cylinder petrol engine
• System type: Intake and exhaust manifold to cylinder-head seal

🔌 Function

The gasket forms a sealed joint between two mating faces in the inlet and exhaust system, preventing leakage of intake air or exhaust gas. It also compensates for minor surface irregularities to maintain an even clamping seal.

⚠️ Common Signs of Failure

• Audible hissing or exhaust leakage at the joint
• Visible soot staining or scorch marks around the mating faces
• Loss of engine performance or rough running from an air or exhaust leak
• Cracked, hardened or crushed gasket material found on inspection
• Repeated loosening of fasteners at the sealed joint

🛠️ Service Notes

• Fit a new gasket every time the joint is disturbed — a gasket takes a permanent set once it has been torqued and will not seal reliably a second time
• Scrape both faces back to clean bare metal, keeping the blade at a shallow angle so it lifts the old material without gouging the surface, and use a plastic scraper on aluminium castings
• Check the faces for flatness, cracks and corrosion pitting, and make sure no old gasket, carbon or hardened sealant is left in the corners or around the bolt holes
• Fit the gasket dry unless the workshop manual for your engine calls for a sealant, and then only the type it specifies — surplus sealant squeezes out into oil, coolant and fuel passages
• Draw the fasteners down progressively in the sequence and to the torque given in the manual for your engine, and recheck after the first heat cycle where the manual asks for it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1378911 → Supersedes 418870 → Supersedes 418859

OEM / Related Numbers

• 418870 earlier number superseded by this part
• 418407 earlier number superseded by this part
• 418859 earlier number superseded by this part

Other-Brand OEM Numbers

• Elring: 694.232

Aftermarket / Verified Equivalents

• Recmar: REC1378911
• Payen: JA409
• Skandix: 1000266
• Skandix performance version: 1074191

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging