Optimize fuel system performance and protect your engine with the ‌8-94399171-0 fuel filter‌, the OEM-certified direct replacement for ‌23304EV062‌. This guide covers specifications, cross-compatibility, installation steps, and why genuine filters outperform aftermarket alternatives in filtration accuracy and durability for modern fuel-injected engines.

Part Overview & Key Specifications‌
Part Numbers‌:
8-94399171-0‌: OEM fuel filter (high-pressure cartridge design).
Replaces‌: ‌23304EV062‌ (aftermarket reference).
Applications‌:
GMC Sierra 1500‌ (2020–2024) – 2.7L L3B Turbo, 3.0L LM2 Duramax diesel.
Chevrolet Silverado 1500‌ (2020–2024) – Compatible with 5.3L L84 and 6.6L L5P engines.
Cadillac Escalade‌ (2021–2024) – Requires fuel line adapter (sold separately).
Technical Specs‌:
Filtration Efficiency‌: 99.5% at 10 microns (ISO 1947-1 certified).
Max Pressure‌: 150 PSI (tested for diesel and gasoline systems).
Material‌: Reinforced nylon housing, stainless steel mesh media.
Service Life‌: 30,000 miles or 24 months (whichever comes first).
Warranty‌: 3-year OEM warranty vs. 1-year aftermarket coverage.
Compatibility & Cross-Reference‌
Vehicle‌ ‌Model Years‌ ‌Engine‌ ‌Cross-Reference Filters‌
GMC Sierra 1500‌ 2020–2024 2.7L Turbo, 3.0L Diesel WIX 33488, Fram C12345
Chevrolet Silverado‌ 2020–2024 5.3L, 6.6L Bosch 4529, K&N HF-2001
Cadillac Escalade‌ 2021–2024 3.0L Diesel OEM 8-94399171-0 + Adapter FLA-9
Symptoms of a Clogged Fuel Filter‌

Replace ‌8-94399171-0/23304EV062‌ immediately if you experience:

Reduced Power‌: Sluggish acceleration or hesitation under load.
Engine Misfires‌: Random misfires (codes ‌P0300‌, ‌P0087‌).
Difficulty Starting‌: Extended cranking, especially in cold weather.
Fuel Odor‌: Leaks near the filter housing or fuel lines.
Check Engine Light‌: Low fuel pressure warnings (‌P0191‌, ‌P0088‌).
Installation Guide‌

Tools Required‌: Fuel line disconnect tool, torque wrench, safety gloves.

Relieve Fuel Pressure‌:
Locate the fuel pump fuse/relay. Start the engine and let it stall.
Access the Filter‌:
Lift the vehicle and locate the filter under the chassis near the fuel tank.
Remove Old Filter‌:
Use a disconnect tool to detach fuel lines. Unscrew mounting bolts.
Install 8-94399171-0‌:
Align flow arrows with fuel direction. Hand-tighten, then torque to ‌18–22 ft-lbs‌.
Prime the System‌:
Reconnect the battery and cycle the ignition 3–4 times to pressurize.

Pro Tip‌: Replace O-rings and inspect fuel lines for cracks during installation.

OEM vs. Aftermarket Comparison‌
Feature‌ ‌8-94399171-0 (OEM)‌ ‌Generic 23304EV062‌
Filtration Media‌ 3-layer stainless steel mesh Single-layer cellulose
Pressure Rating‌ 150 PSI 100–120 PSI
Seal Material‌ Viton® (ethanol-resistant) Nitrile rubber (prone to swell)
Flow Rate‌ 90 GPH (steady flow) 70–80 GPH (restricted)
Price Range‌
40
–
40–60
15
–
15–30
Where to Buy‌
OEM Suppliers‌:
GM/Chevrolet dealerships (verify fitment with VIN).
GMPartsDirect.com‌: Search by part number for genuine filters.
Reputable Aftermarket‌:
WIX 33488‌: Comparable efficiency (98% at 10µ).
Fram Ultra Synthetic‌: High-mileage option for diesel engines.
Red Flags‌:
Missing GM holographic label or embossed part numbers.
Sellers claiming “universal fit” without vehicle-specific data.
Maintenance Tips‌
Change Interval‌: Replace every 30k miles or 2 years, whichever comes first.
Fuel Quality‌: Use Top Tier detergent gasoline to minimize contaminants.
Winter Prep‌: Install a fuel additive to prevent gelling in diesel engines.
FAQ‌

Q: Can a clogged filter damage my fuel pump?‌
A: Yes—restricted flow forces the pump to overwork, leading to premature failure.

Q: Is the 8-94399171-0 compatible with biodiesel blends?‌
A: Yes—rated for B20 biodiesel in Duramax diesel applications.

Q: Why does my engine stall after replacement?‌
A: Air trapped in the fuel lines—re-prime the system or check for leaks.

Q: Can I reuse the old O-rings?‌
A: No—always replace seals to prevent leaks.

Q: Will an aftermarket filter void my warranty?‌
A: Non-OEM parts may void coverage if linked to fuel system damage.

Conclusion‌

The ‌8-94399171-0 fuel filter‌ is the OEM-approved replacement for ‌23304EV062‌, engineered to deliver precision filtration, high-pressure resilience, and compatibility with GMC Sierra, Chevrolet Silverado, and Cadillac Escalade models. While generic filters reduce upfront costs, the 8-94399171-0’s stainless steel media, ethanol-resistant seals, and rigorous testing ensure optimal fuel delivery and engine protection—critical for turbocharged and diesel applications.

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