Air Filter Element – Fits MerCruiser Diesel 2.8L & 4.2L Engines (Replaces 35-805312, 805312)
Air Filter Element – Fits MerCruiser Diesel 2.8L & 4.2L Engines (Replaces 35-805312, 805312) 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
Air Filter Element – Fits MerCruiser Diesel 2.8L & 4.2L Engines...
Product Details
This high-quality Air Filter Element – Fits MerCruiser Diesel 2.8L & 4.2L Engines is designed to protect your engine by preventing harmful dust, dirt, and debris from entering the intake system. It is specifically engineered for MerCruiser diesel engines including VM D2.8L, D254, and D4.2L series, as well as Cummins Mercruiser Diesel (CMD) 2.8 and 4.2 series models.
This part serves as a direct interchange for Mercury/MerCruiser 35-805312 and 805312, GHmarine 35-805312, and Seasierra 35-805312, ensuring a precise fit and reliable performance.
- Installs directly into the OEM air filter housing.
- Engineered for marine diesel engine environments.
- Includes one air filter element for a complete replacement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 35-805312 / 805312 |
| GHmarine | 35-805312 |
| Seasierra | 35-805312 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for MerCruiser diesel engines originally manufactured by VM Motori.
Also fits specific Cummins MerCruiser Diesel (CMD) engine serial numbers as listed.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | D2.8L/165 D-TRONIC VM 169 I/L4 | 165 | 4-Stroke | 35-805312 | VM Motori inline 4-cylinder |
| MerCruiser | D254 TURBO AC VM 254 I/L6 | 4-Stroke | 35-805312 | VM Motori inline 6-cylinder | |
| MerCruiser | D254 TURBO AC (BRAVO) VM 254 I/L6 | 4-Stroke | 35-805312 | VM Motori inline 6-cylinder | |
| MerCruiser | D4.2L/200 LD VM 254 I/L6 | 200 | 4-Stroke | 35-805312 | VM Motori inline 6-cylinder |
| MerCruiser | D4.2L/220 IDI VM 254 I/L6 | 220 | 4-Stroke | 35-805312 | VM Motori inline 6-cylinder |
| MerCruiser | D4.2L/250 D-TRONIC VM 254 I/L6 | 250 | 4-Stroke | 35-805312 | VM Motori inline 6-cylinder |
| CMD | 2.8 EI 165 | 165 | 4-Stroke | 35-805312 | Serial #88005001-88005167 |
| CMD | 2.8 ES 165 | 165 | 4-Stroke | 35-805312 | Serial #88005001-88005167 |
| CMD | 4.2 EI 250 | 250 | 4-Stroke | 35-805312 | Serial #88040001-88040508 |
| CMD | 4.2 ES 250 | 250 | 4-Stroke | 35-805312 | Serial #88040001-88040508 |
| CMD | 4.2 MI 200 | 200 | 4-Stroke | 35-805312 | Serial #88020001-88020166 |
| CMD | 4.2 MI 230 | 230 | 4-Stroke | 35-805312 | Serial #88030001-88030344 |
| CMD | 4.2 MS 200 | 200 | 4-Stroke | 35-805312 | Serial #88020001-88020166 |
| CMD | 4.2 MS 230 | 230 | 4-Stroke | 35-805312 | Serial #88030001-88030344 |
Technical Specs
- Product Type
- Air Filter Element
- Installation
- Direct replacement
- Fuel Type
- Diesel
- Dimensions
- Approx. 203 × 127 × 32 mm (8.00 × 5.00 × 1.25 in)
- Weight
- 0.06 kg (0.13 lbs)
What’s in the Box
- 1 x Air Filter Element (35-805312)
Installation Notes
- Ensure the engine is off and cool to the touch before starting.
- Locate the air filter housing; consult your engine's service manual if unsure.
- Release the clips or remove the fasteners securing the housing cover.
- Carefully remove the old filter element, taking note of its orientation.
- Wipe the inside of the housing with a clean cloth to remove any loose debris.
- Insert the new air filter element, making sure it is seated correctly and matches the old filter's orientation.
- Re-secure the housing cover, ensuring a tight seal to prevent air leaks.
Troubleshooting & FAQ
How do I confirm this filter fits my specific engine?
This filter is designed for MerCruiser and CMD 2.8L and 4.2L diesel models. The best way to ensure compatibility is to cross-reference your engine model and serial number with the details in the "Engine & Model Compatibility" table above. Visually comparing the new filter to your old one before installation is also recommended.
What are the signs a diesel air filter needs to be replaced?
Common symptoms of a clogged air filter include decreased engine power, higher fuel consumption, excessive black smoke from the exhaust, and sluggish acceleration. A visual inspection showing a dark, dirty, or debris-filled filter is the clearest indicator.
What is the recommended replacement interval for this filter?
The replacement schedule can vary based on your boat's operating environment (e.g., dusty conditions or saltwater spray). A good practice is to inspect the filter every 100 hours of operation and replace it at least once per boating season, or whenever it appears visibly soiled.
Is this a direct replacement for OEM part 35-805312?
Yes, this is an aftermarket filter engineered to be a direct replacement for Mercury/MerCruiser part numbers 35-805312 and 805312, matching the fit, form, and function of the original part.
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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