1378493 Gasket | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta gasket from the Engine group, used to seal a mating joint between engine components and prevent leakage of fluid or combustion gases. This current-issue part number replaces the earlier gasket 1276817, which in turn replaced 463359, so it also covers those superseded applications. Supplied as a single gasket.

🚤 Compatibility

Typically suits:

• Volvo Penta AQ125B
• Volvo Penta AQ131A
• Volvo Penta AQ131B
• Volvo Penta AQ131C
• Volvo Penta AQ131D
• Volvo Penta AQ151A
• Volvo Penta AQ151B
• Volvo Penta AQ151C
• Volvo Penta AQ171A
• Volvo Penta AQ171C
• Volvo Penta AQ145B
• Volvo Penta 230A
• Volvo Penta 230B
• Volvo Penta 250A
• Volvo Penta 250B
• Volvo Penta 251A

• Engine Family: AQ
• HP Range: Approximately 120-171 HP
• Year Range: Approximately 1985 - 1992

⚙️ Key Features

• OEM Volvo Penta part number 1378493
• System group: Engine
• Net weight approximately 0.04 kg
• Supersedes earlier part number 1276817, which replaced 463359
• Fits AQ-series four-cylinder petrol sterndrive engines and 230/250/251 series units
• Current-issue replacement, sold individually
• Engine type: Volvo Penta B230 / B234 inline 4-cylinder petrol engine

🔌 Function

The gasket forms a compressible seal between two engine component faces, keeping oil, coolant or combustion gases contained within their intended passages. It compensates for minor surface irregularities so the joint remains tight under heat and pressure cycling.

⚠️ Common Signs of Failure

• Visible oil, coolant or fuel seepage at the joint face
• Hardened, brittle or cracked gasket material on inspection
• Flattened or crushed sections causing loss of clamping seal
• Loss of pressure or vacuum at the sealed joint
• Staining, weeping or residue build-up around mating surfaces after reassembly

🛠️ 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

• 1378493 → Supersedes 1276817 → Supersedes 463359

OEM / Related Numbers

• 1276817 earlier number superseded by this part
• 463359 earlier number superseded by this part

Aftermarket / Verified Equivalents

• Recmar: REC1378493
• Professional Parts Sweden: 21438493

📦 Condition

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