Fuel Filter Element – Fits MerCruiser 5.0L-8.2L (Replaces 35-866171A01, 8M0093688)
Fuel Filter Element – Fits MerCruiser 5.0L-8.2L (Replaces 35-866171A01, 8M0093688) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Fuel Filter Element – Fits MerCruiser 5.0L-8.2L (Replaces 35-866171...
Product Details
This aftermarket Fuel Filter Element – Fits MerCruiser 5.0L, 5.7L, 6.2L, 8.1L, 8.2L Engines is designed for various V8 models from 2004 and newer equipped with GEN III Cool Fuel systems. It ensures clean fuel delivery by trapping contaminants before they reach the engine, maintaining performance and reliability.
It serves as a direct cross-reference for Mercury parts 35-866171A01 and 8M0093688, Sierra 18-7977, and Quicksilver 35-866171A01.
- Installs internally within the GEN III Cool Fuel module housing.
- Designed for gasoline applications.
- Engineered as a direct-fit replacement for easy installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Mercury | 35-866171A01 | 8M0093688 |
| Quicksilver | 35-866171A01 | |
| Sierra | 18-7977 | |
| Aftermarket | AM35-866171A01 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fitment is for MerCruiser engines from approximately 2004 and newer that use the GEN III Cool Fuel system.
| Brand | Model | Stroke | Years | OEM Part No. |
|---|---|---|---|---|
| MerCruiser | 5.0L MPI Alpha/Bravo | 4-Stroke | 2004+ (S/N 0W060000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 5.0L MPI Alpha/Bravo EC | 4-Stroke | 2004+ (S/N 1A300000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI Alpha/Bravo | 4-Stroke | 2004+ (S/N 0W060000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI Alpha/Bravo EC | 4-Stroke | 2004+ (S/N 1A300000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI Horizon Alpha/Bravo | 4-Stroke | 2004+ (S/N 0W060000 - 1A299999) | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI Horizon Alpha/Bravo EC | 4-Stroke | 2004+ (S/N 1A300000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI Horizon MIE | 4-Stroke | S/N 0M398372 - 1A089999 | 35-866171A01/8M0093688 |
| MerCruiser | 350 MAG MPI MIE | 4-Stroke | S/N 0M398372 - 1A089999 | 35-866171A01/8M0093688 |
| MerCruiser | 377 MAG MPI Bravo | 4-Stroke | 2004+ (S/N 1A300000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 377 MAG MPI Bravo EC | 4-Stroke | 2004+ (S/N 1A343300 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 496 MAG (Base & H.O. Models) | 4-Stroke | S/N 0W060000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 496 MAG EC (Base & H.O. Models) | 4-Stroke | S/N 1A066166 - 1A350440 | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L MPI Horizon MIE | 4-Stroke | 2004+ (S/N 1A090000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L MPI MIE | 4-Stroke | 2004+ (S/N 1A090000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L MPI MIE EC | 4-Stroke | 2004+ (S/N 1A090000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L MPI Tow | 4-Stroke | S/N 1G400000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L MPI Towsport WITH GEN III | 4-Stroke | S/N 1A091881 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 5.7L SKI EC | 4-Stroke | S/N 1A090000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 6.2L MPI Horizon MIE | 4-Stroke | 2004+ (S/N 1A090000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 6.2L MPI MIE | 4-Stroke | 2004+ (S/N 1A090000 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | 6.2L MPI MIE EC | 4-Stroke | 2004+ (S/N 1A091600 & Up) | 35-866171A01/8M0093688 |
| MerCruiser | MX 6.2L MPI Bravo | 4-Stroke | S/N 0W060000 - 1A299999 | 35-866171A01/8M0093688 |
| MerCruiser | MX 6.2L MPI Horizon Bravo | 4-Stroke | S/N 0W060000 - 1A299999 | 35-866171A01/8M0093688 |
| MerCruiser | MX 6.2L MPI Horizon MIE | 4-Stroke | S/N 0M398395 - 1A089999 | 35-866171A01/8M0093688 |
| MerCruiser | MX 6.2L MPI MIE | 4-Stroke | S/N 0M398395 - 1A089999 | 35-866171A01/8M0093688 |
| MerCruiser | SCORPION 350 EC | 4-Stroke | S/N 0W698433 & Up | 35-866171A01/8M0093688 |
| MerCruiser | SCORPION 377 HO EC | 4-Stroke | S/N 1A091488 - 1A092170 | 35-866171A01/8M0093688 |
| MerCruiser | 383 MAG Stroker Inboard | 4-Stroke | S/N 1G300000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 496 H.O. Bravo | 4-Stroke | S/N 1G400000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (Base) | 4-Stroke | S/N 0W090000 - 0W698172, 0W691821 - 1A380318 | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (Base) EC | 4-Stroke | S/N 0W697154 - 1A380251 | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (H.O.) | 4-Stroke | S/N 0W090000 - 0W698172, 0W691821 - 1A380318 | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (H.O.) EC | 4-Stroke | S/N 0W697154 - 1A380251 | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (Inline) | 4-Stroke | S/N 1G300000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Inboard (V-Drive) | 4-Stroke | S/N 1G300000 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.1L Towsport (Base) | 4-Stroke | S/N 1A380074 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Inboard (Base) EC | 4-Stroke | S/N 1A350802 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Inboard (H.O.) EC | 4-Stroke | S/N 1A350802 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Mag (Base Model) | 4-Stroke | S/N 1A351597 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Mag (H.O. Model) | 4-Stroke | S/N 1A351597 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Mag EC (Base Model) | 4-Stroke | S/N 1A350340 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 8.2L Mag EC (H.O. Model) | 4-Stroke | S/N 1A350340 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 520 | 4-Stroke | S/N 0M970122 & Up | 35-866171A01/8M0093688 |
| MerCruiser | 540 | 4-Stroke | S/N 0M970866 & Up | 35-866171A01/8M0093688 |
Technical Specs
- Product Type
- Fuel Filter Element
- Installation
- Internal (within fuel module housing)
- Fuel Type
- Gasoline
- Connection
- Direct fit to Cool Fuel Module housing
- Housing Material
- Filter paper with plastic endcaps
- Housing Color
- Yellow
- Warranty
- 1 Year (aftermarket); OEM warranty varies by manufacturer
- Other Technical Attributes
- Element for GEN III Cool Fuel Module system
What’s in the Box
- 1 x Fuel Filter Element (35-866171A01/8M0093688)
Installation Notes
- Ensure the engine is off and the battery is disconnected. Relieve pressure from the fuel system according to your service manual.
- Locate the GEN III Cool Fuel Module. Place absorbent rags around the housing to catch any spilled fuel.
- Carefully open the fuel module housing, following the manufacturer's specific instructions.
- Remove the old filter element, taking note of its orientation. Remove and discard any old gaskets or seals included with the new filter.
- Clean the inside of the housing and inspect for any debris or damage.
- Install the new filter element, ensuring it is seated correctly.
- Replace the housing cover and torque the bolts to the manufacturer's specified value.
- Reconnect the battery, prime the fuel system as needed, and check for leaks before starting the engine.
Troubleshooting & FAQ
How do I know if this filter fits my engine?
This filter is specifically for MerCruiser V8 engines (5.0L, 5.7L, 6.2L, 8.1L, 8.2L) from 2004 and newer that use the GEN III Cool Fuel system. The most reliable way to confirm is by matching your existing part number to 35-866171A01, 8M0093688, or one of the other aftermarket references listed.
What are the signs of a clogged fuel filter?
Common symptoms include engine hesitation, loss of power, stalling, difficulty starting, or rough idling. If your engine bogs down under acceleration, a restricted fuel filter is a likely cause.
How often should I replace my fuel filter?
For most recreational boats, it's recommended to replace the fuel filter annually or every 100 hours of operation, whichever comes first. Refer to your engine's service manual for the precise maintenance interval.
Is a special tool required for installation?
No special tools are typically needed, just standard hand tools to access and open the Cool Fuel Module. However, a torque wrench is recommended for tightening the housing bolts to the correct specification to prevent leaks.
Can this filter be cleaned and reused?
No, this is a disposable filter element. Attempting to clean it is ineffective and can introduce contaminants back into the fuel system, potentially damaging sensitive components like fuel injectors.
What's the difference between this and the OEM part?
This aftermarket filter is designed to meet or exceed OEM specifications for fit, form, and function. It offers a cost-effective alternative to the original manufacturer's part without compromising on filtration performance or material quality.
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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