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
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
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 is designed for MerCruiser and Cummins MerCruiser Diesel (CMD) marine engines, including the 2.8L (165HP) and 4.2L (200-250HP) 4-stroke diesel models manufactured between the 1990s and early 2000s.
It serves as a direct interchange for OEM and aftermarket part numbers, including Mercury/MerCruiser 35-805312 and 805312, ensuring a reliable fit for your specified engine.
- Designed for direct replacement installation.
- Engineered for use in marine diesel fuel systems.
- Includes one air filter element per package.
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 |
| Myparts | Equivalent |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This filter is compatible with the following MerCruiser Diesel engines, primarily manufactured by VM Motori.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | D2.8L/165 D-TRONIC VM 169 I/L4 | 165 | 4-Stroke | 1990s–2000s | 35-805312 | VM Motori inline 4-cylinder |
| MerCruiser | D254 TURBO AC VM 254 I/L6 | 4-Stroke | 1990–1993 | 35-805312 | VM Motori inline 6-cylinder | |
| MerCruiser | D254 TURBO AC (BRAVO) VM 254 I/L6 | 4-Stroke | 1990–1993 | 35-805312 | VM Motori inline 6-cylinder | |
| MerCruiser | D4.2L/200 LD VM 254 I/L6 | 200 | 4-Stroke | 1990s–2000s | 35-805312 | VM Motori inline 6-cylinder |
| MerCruiser | D4.2L/220 IDI VM 254 I/L6 | 220 | 4-Stroke | 1990s–2000s | 35-805312 | VM Motori inline 6-cylinder |
| MerCruiser | D4.2L/250 D-TRONIC VM 254 I/L6 | 250 | 4-Stroke | 1990s–2000s | 35-805312 | VM Motori inline 6-cylinder |
It also fits the following Cummins MerCruiser Diesel (CMD) engine series.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| 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
- 230 × 140 × 55 mm (9.06 × 5.51 × 2.17 in)
- Weight
- 0.06 kg (0.13 lbs)
- Warranty
- 1 Year (Myparts)
What’s in the Box
- 1 x Air Filter Element (35-805312)
Installation Notes
- Ensure the engine is turned off and has completely cooled down before starting work.
- Locate and open the engine's air filter housing. This may require releasing clips or removing screws.
- Carefully take out the old, used air filter element from the housing.
- Wipe the inside of the housing clean to remove any dust, dirt, or debris.
- Insert the new air filter element, making sure it sits securely in the housing to form a proper seal.
- Close the housing cover and refasten the clips or screws to secure it in place.
Troubleshooting & FAQ
How do I know if this air filter is the correct one for my engine?
First, check your engine model and serial number against the compatibility tables on this page. This filter is specifically designed for MerCruiser and CMD 2.8L/4.2L diesel models. Second, compare your old filter's part number to the cross-references listed, such as 35-805312.
What are the signs of a clogged or failing air filter?
Common symptoms include reduced engine performance, increased black smoke from the exhaust, lower fuel efficiency, and the engine running rough or struggling to accelerate. A visual inspection will also show if the filter is excessively dirty or damaged.
How often should this maritime air filter be replaced?
Replacement intervals depend on your engine's hours and operating conditions (e.g., dusty or salty air). A general best practice is to inspect the filter during every routine service and replace it at least once a year or whenever it appears dirty.
Is this an OEM part?
This listing is for a high-quality aftermarket replacement, not an original OEM component. It is engineered to meet or exceed OEM specifications for fit, form, and function, providing comparable performance and filtration.
What is the difference between OEM and aftermarket parts?
This listing is an aftermarket replacement (not OEM). It has been built to OEM-level specifications with comparable materials. All our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
How fast is shipping?
We ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free for most orders, with expedited options available at checkout where applicable.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused parts in their original condition. See our policy page for full details.
Safety & Important Info
- Verify images and specifications against 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 quality control.
Payment & Security
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