Exhaust Manifold Hardware Kit – Fits Volvo Penta 3.0L GL/GS/GLM/GSM (Replaces 3853256, MAR879)
Exhaust Manifold Hardware Kit – Fits Volvo Penta 3.0L GL/GS/GLM/GSM (Replaces 3853256, MAR879) 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
Exhaust Manifold Hardware Kit – Fits Volvo Penta 3.0L GL/GS/GLM/GSM...
Product Details
This Exhaust Manifold Hardware Kit is designed for Volvo Penta 3.0L GL, GS, GLM, and GSM 4-cylinder marine engines manufactured between 1990 and 2017. It provides all the necessary components for a secure and reliable exhaust manifold installation.
This kit serves as a direct replacement for Volvo Penta part numbers 3853256, 3850495, 3853431, and 3853378.
- Installs as a direct bolt-on replacement, no modifications required.
- Constructed from high-grade stainless steel and zinc-plated hardware for corrosion resistance.
- Includes a complete set of hardware needed for one exhaust manifold.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3853256 |
| Volvo Penta | 3850495 |
| Volvo Penta | 3853431 |
| Volvo Penta | 3853378 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This hardware kit is compatible with a wide range of Volvo Penta 3.0L engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Volvo Penta | 3.0GLP-A, 3.0GLP-B | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GLM-A, 3.0GLM-B, 3.0GLM-C | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSP-A, 3.0GSP-B, 3.0GSP-C | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSM-A, 3.0GSM-B, 3.0GSM-C | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GLP-C, 3.0GLP-D, 3.0GLP-E, 3.0GLP-J, 3.0GLP-N | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GLMMDA | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSPMDA | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMHUB, 3.0GSPHUB | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMNCA, 3.0GSMNCS, 3.0GSPNCA, 3.0GSPNCS | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMLKD, 3.0GSPLKD | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMWTR, 3.0GSMWTS, 3.0GSPWTR, 3.0GSPWTS | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMEFS, 3.0GSPEFS | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
| Volvo Penta | 3.0GSMBY, 3.0GSPBY | 135–140 | 4-Stroke | 1990–2017 | 3853256 |
Technical Specs
- Product Type
- Exhaust Manifold Hardware Kit
- Installation
- Direct bolt-on replacement
- Fuel Type
- Gasoline
- Materials
- Stainless steel/zinc-plated hardware
- Weight
- 0.71 kg (1.56 lbs)
- Product Dimensions
- 50.0 cm L x 13.0 cm W x 3.0 cm H
- Warranty
- Manufacturer standard (varies by brand)
What’s in the Box
- 1 x Complete Hardware Kit (replaces Volvo Penta 3853256)
Installation Notes
- Disconnect the battery and allow the engine to cool completely before starting work.
- Carefully disconnect any hoses or sensors attached to the exhaust manifold.
- Remove the old nuts, bolts, and washers. Use a penetrating oil for any rusted hardware.
- Clean the cylinder head and manifold mounting surfaces thoroughly, ensuring all old gasket material is removed.
- Position the exhaust manifold and new gasket (not included in this kit) onto the cylinder head studs.
- Hand-tighten the new hardware to ensure proper alignment.
- Using a torque wrench, tighten the hardware in the sequence and to the value specified in your engine's service manual.
- Reconnect any hoses or sensors previously removed.
- Reconnect the battery, start the engine, and check for any exhaust or fluid leaks around the manifold.
Troubleshooting & FAQ
How do I confirm this kit fits my Volvo Penta 3.0L engine?
Check the "Engine & Model Compatibility" table on this page. Match your specific engine model (e.g., 3.0GLP-A, 3.0GSMNCS) and year range (1990–2017) to ensure a perfect fit. Cross-referencing your old part number with our "Part Number Matrix" is another reliable way to verify.
What are common signs that my exhaust manifold hardware needs replacement?
Look for visible rust or corrosion on the bolts and nuts, exhaust leaks (indicated by a ticking sound from the engine bay, especially when cold), or water leaking from the manifold gasket area. Loose or broken bolts are also clear indicators.
Does this hardware kit include gaskets?
No, this is a hardware-only kit containing the necessary nuts, bolts, and washers. Exhaust manifold gaskets must be purchased separately to ensure a proper seal.
What are the torque specifications for this hardware?
Torque specifications are specific to your engine model and are critical for a leak-free seal. These values are not included with the kit. Always refer to your Volvo Penta service and repair manual for the correct tightening sequence and torque values.
Can I reuse my old exhaust manifold bolts?
It is strongly recommended to always use new hardware when replacing an exhaust manifold or gasket. Old bolts can stretch, weaken, or corrode over time, leading to improper torque, failed seals, and potential engine damage.
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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