Cylinder Head Gasket – Fits Volvo Penta AQ115B, AQ130D, BB115C, MB20C (Replaces 9139282, 462623)
Cylinder Head Gasket – Fits Volvo Penta AQ115B, AQ130D, BB115C, MB20C (Replaces 9139282, 462623) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Cylinder Head Gasket – Fits Volvo Penta AQ115B, AQ130D, BB115C, MB2...
Product Details
This is a high-quality aftermarket Cylinder Head Gasket – Fits Volvo Penta AQ115B, AQ130D, BB115C, MB20C for 4-cylinder gasoline marine engines manufactured between 1975 and 1977. It provides the critical seal between the engine block and cylinder head, necessary to maintain maximum compression and prevent coolant or oil from leaking into the cylinders.
This part is a direct replacement for Volvo Penta part numbers 9139282 and 462623, and Orbitrade 13623.
- Provides essential sealing for the combustion chamber.
- Installs between the engine block and cylinder head.
- Also included in the comprehensive Orbitrade gasket kit 21569.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Volvo Penta | 462623 | 9139282 |
| Orbitrade | 13623 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Volvo Penta | AQ115B | 4-Stroke | 1975–1977 | 9139282/462623 | B20 engine based |
| Volvo Penta | AQ130D | 4-Stroke | 1975–1977 | 9139282/462623 | B20 engine based |
| Volvo Penta | BB115C | 4-Stroke | 9139282/462623 | B20 engine based | |
| Volvo Penta | MB20C | 4-Stroke | 9139282/462623 | B20 engine based |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Between engine block and cylinder head
- Fuel Type
- Gasoline
- Housing Material
- Composite/Metal
- Thickness
- 1.2mm
- Dimensions
- 42.0 x 14.0 x 0.2
- Other Technical Attributes
- Included in Orbitrade gasket kit 21569
What’s in the Box
- 1 x Cylinder Head Gasket (9139282/462623)
Installation Notes
- Disconnect the battery and completely drain the engine coolant and oil.
- Remove components obstructing access, such as the intake/exhaust manifolds and cylinder head cover.
- Loosen and remove the cylinder head bolts in the reverse order of the manufacturer's tightening sequence.
- Carefully lift the cylinder head off the engine block. Avoid prying between the mating surfaces.
- Thoroughly clean both the engine block deck and cylinder head surfaces, removing all old gasket material and residue.
- Position the new cylinder head gasket on the engine block, ensuring correct orientation with the dowel pins.
- Carefully lower the cylinder head back into place over the gasket and dowels.
- Install new or verified-usable head bolts. Torque them in the correct sequence and stages as specified in your engine's official service manual. This step is critical.
- Reassemble all previously removed components.
- Refill the engine with new oil and a fresh coolant mixture according to manufacturer recommendations.
- Reconnect the battery, start the engine, and meticulously check for any coolant, oil, or exhaust leaks.
Troubleshooting & FAQ
How do I know if my cylinder head gasket is failing?
Common signs of a blown head gasket include persistent engine overheating, white smoke from the exhaust (burning coolant), milky or frothy engine oil (coolant contamination), loss of engine power, or measurable loss of compression in one or more cylinders.
Is this gasket compatible with all Volvo Penta B20 engines?
This gasket is specifically designed for the B20-based marine models AQ115B, AQ130D, BB115C, and MB20C manufactured from 1975–1977. While the B20 engine was used in many applications, you must verify compatibility with your specific marine engine model and year before purchasing.
What is the correct torque procedure for this gasket?
The torque specifications and tightening sequence are determined by the engine manufacturer (Volvo Penta), not the gasket. It is critical to consult the official service manual for your specific engine model to ensure a proper, leak-free seal and to prevent damage to the engine or cylinder head.
Can I reuse a cylinder head gasket?
No. Cylinder head gaskets are single-use, "crush" style components. They are designed to deform upon installation to create a perfect seal. Once torqued and heat-cycled, they will not seal correctly a second time and must be replaced whenever the cylinder head is removed.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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