Cylinder Head Gasket – Fits MerCruiser & Volvo Penta 7.4L/8.2L Marine Engines (Replaces 17048)
Cylinder Head Gasket – Fits MerCruiser & Volvo Penta 7.4L/8.2L Marine Engines (Replaces 17048) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Cylinder Head Gasket – Fits MerCruiser & Volvo Penta 7.4L/8.2L ...
Product Details
This high-performance Cylinder Head Gasket is engineered for MerCruiser and Volvo Penta big block V8 marine engines, specifically the 7.4L (454ci) and 8.2L (502ci) Generation IV, V, and VI models from 1991–2002. It provides a reliable seal for demanding marine conditions, ensuring engine integrity and performance.
It serves as a direct replacement for several part numbers, including FEL-PRO 17048, Mercury/MerCruiser 27-14960Q1, and Sierra 18-3873, offering a dependable interchange solution.
- Designed as a direct-fit engine service part for straightforward installation.
- Features a stainless steel core with PermaTorque® construction and Printoseal® sealing beads for superior durability and a lasting seal.
- Suitable for 4-stroke gasoline marine engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| FEL-PRO | 17048 |
| Mercury/MerCruiser | 27-14960Q1 |
| Sierra | 18-3873 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits various big block V8 engines from MerCruiser, including 7.4L and 8.2L TBI models from the 1990s and early 2000s.
Compatible with a wide range of Volvo Penta Gen IV and Gen V engines, covering 7.4L and 8.2L applications.
Also fits GM Marine, Crusader, Indmar, and Marine Power base marine engines using the 7.4L/454ci or 8.2L/502ci blocks.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 454 (7.4L) TBI MIE (Generation V & VI) | 300-330 | 4-Stroke | 1991–2002 | 27-14960Q1 | Performance design |
| MerCruiser | 502 (8.2L) TBI (Generation V & VI) | 385-425 | 4-Stroke | 1991–2002 | 27-14960Q1 | Performance design |
| MerCruiser | 502 (8.2L) TBI MIE (Generation V & VI) | 385-425 | 4-Stroke | 1991–2002 | 27-14960Q1 | Performance design |
| Volvo Penta | 740, 740 DP (Gen IV) | 300 | 4-Stroke | 1991–2002 | 17048 | 7.4L/454ci application |
| Volvo Penta | 740 DP (Gen V) | 300 | 4-Stroke | 1991–2002 | 17048 | 7.4L/454ci application |
| Volvo Penta | 7.4 GL (Gen V) | 300 | 4-Stroke | 1991–2002 | 17048 | 7.4L/454ci application |
| Volvo Penta | 7.4 Gi (Gen V) | 330 | 4-Stroke | 1991–2002 | 17048 | 7.4L/454ci application |
| Volvo Penta | 7.4 GSi (Gen V) | 385 | 4-Stroke | 1991–2002 | 17048 | 7.4L/454ci application |
| Volvo Penta | 820 DPX (Gen V) | 385 | 4-Stroke | 1991–2002 | 17048 | 8.2L/502ci application |
| GM Marine | 8.2L/502ci Base Marine Engine | 425 | 4-Stroke | 1991–2002 | 17048 | Performance design |
| Crusader | 454/7.4L | 300-330 | 4-Stroke | 1991–2002 | 17048 | Performance design |
| Indmar | 8.2L/502ci | 385-425 | 4-Stroke | 1991–2002 | 17048 | Performance design |
| Marine Power | 7.4L/454ci | 300-330 | 4-Stroke | 1991–2002 | 17048 | Performance design |
| Marine Power | 8.2L/502ci | 385-425 | 4-Stroke | 1991–2002 | 17048 | Performance design |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Engine Service Part
- Fuel Type
- Gasoline
- Housing Material
- Stainless Steel Core
- Housing Color
- Metal/Black
- Dimensions
- Length: 58.0 cm, Width: 23.0 cm, Height: 5.0 cm
- Weight
- 0.21 kg (0.46 lb)
- Other Technical Attributes
- PermaTorque® construction with wire ring, Printoseal® sealing beads
What’s in the Box
- 1 x Cylinder Head Gasket (17048)
Installation Notes
- Disconnect the battery and completely drain the engine coolant.
- Remove components obstructing access, such as the exhaust manifold, intake manifold, and valve covers.
- Loosen and remove the cylinder head bolts following the manufacturer's recommended reverse-tightening sequence.
- Carefully lift the cylinder head off the engine block. Avoid scratching the mating surfaces.
- Thoroughly clean both the cylinder head and engine block surfaces. Ensure they are free of old gasket material, oil, and debris.
- Position the new gasket on the engine block dowels, confirming the correct orientation.
- Gently lower the cylinder head back onto the block and gasket.
- Install new or inspected head bolts. Tighten them in the specified sequence and to the correct torque values using a calibrated torque wrench.
- Reinstall all previously removed components.
- Refill the cooling system, reconnect the battery, and check for leaks after starting the engine.
Troubleshooting & FAQ
How do I know if this gasket fits my specific engine model?
This gasket is designed for MerCruiser and Volvo Penta 7.4L (454ci) and 8.2L (502ci) big block V8 engines (Gen IV, V, VI) made between 1991–2002. Always check the compatibility table on this page and cross-reference your engine's OEM part number with those listed in our Part Number Matrix.
What are common signs of a failed cylinder head gasket?
Symptoms include engine overheating, milky-white engine oil, loss of coolant with no visible external leaks, white smoke from the exhaust, and bubbling in the coolant reservoir. A compression test can help confirm a diagnosis.
Is this gasket a "PermaTorque" design?
Yes, this gasket features PermaTorque® construction, which means it is designed to maintain its seal without needing to be re-torqued after installation, providing a more reliable, long-lasting seal.
Does this gasket need a sealant or adhesive during installation?
No. The Printoseal® sealing beads are designed to create a tight seal on their own. Applying additional sealants can interfere with the gasket's function and may void the warranty. Always install it on clean, dry surfaces.
Should I replace head bolts when replacing the gasket?
It is highly recommended. Many big block marine engines use torque-to-yield (TTY) bolts, which stretch permanently during installation and should not be reused. Reusing old bolts can lead to improper clamping force and premature gasket failure.
How often does a marine head gasket need replacement?
Cylinder head gaskets do not have a fixed replacement interval and are typically replaced only when they fail. Their lifespan depends on engine operating conditions, maintenance, and proper installation.
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.
Payment & Security
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