
Locking Fuel Cap
Fits Chevrolet, Dodge, GMC & more — 1,011 vehicle applications
Contact us at 1-866-461-2787 for pricing
Contact us at 1-866-461-2787 for pricing
Call for PriceSelect your vehicle to check fitment.
BFNG MGC203KAG Vehicle Fitment
Fits 1,011 vehiclesThis Locking Fuel Cap fits Chevrolet, Dodge, GMC, Jeep vehicles.
1996-2002 Chevrolet Express 2500
1996-2002 Chevrolet Express 3500
1995-1999 Chevrolet C1500 Suburban
1995-1999 Chevrolet K1500 Suburban
1995 Chevrolet Tahoe
1994-1999 Chevrolet C2500 Suburban
1994-1999 Chevrolet K2500 Suburban
1989-1991 Chevrolet R1500 Suburban
1989-1991 Chevrolet R2500 Suburban
1989-1991 Chevrolet R3500
1989-1991 Chevrolet V1500 Suburban
1989-1991 Chevrolet V2500 Suburban
1989-1991 Chevrolet V3500
1989 Chevrolet R2500
1988-2000 Chevrolet C2500
1988-2000 Chevrolet C3500
1988-2000 Chevrolet K2500
1988-2000 Chevrolet K3500
1988-1998 Chevrolet C1500
1988-1998 Chevrolet K1500
1987-1994 Chevrolet Blazer
1987-1988 Chevrolet R10 Suburban
1987-1988 Chevrolet R20
1987-1988 Chevrolet R20 Suburban
1987-1988 Chevrolet R30
1987-1988 Chevrolet V10 Suburban
1987-1988 Chevrolet V20 Suburban
1987-1988 Chevrolet V30
1987 Chevrolet R10
1987 Chevrolet V10
1987 Chevrolet V20
1983-1996 Chevrolet G30
1983-1995 Chevrolet G20
1982-1997 Chevrolet P30
1982-1989 Chevrolet P20
1982-1986 Chevrolet K5 Blazer
1979-1986 Chevrolet C10
BFNG MGC203KAG Specifications
- Prop 65
- WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
- Thread Diameter
- 1.75 in
- Prop 65
- ADVERTENCIA: Riesgo de cáncer y daños reproductivos - www.p65warnings.ca.gov
- Thread Diameter
- 44.45 mm
- Material
- Plastic
- Material
- Plástico
BFNG MGC203KAG Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
BFNG MGC203KAG Product Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Key Features
- Manufactured from durable, long-life materials
- Passes all state and federal emissions tests
- Protects your fuel from theft and vandalism
- Independently tested for emission control
- Reduces air pollution with proper sealing and venting
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
About BFNG
Shop BFNG Fuel Tank Cap at Autrex with vehicle fitment details, current pricing, and checkout options for the BFNG MGC203KAG. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — BFNG MGC203KAG
What vehicles does the BFNG MGC203KAG fit?
The BFNG MGC203KAG fits 50 vehicle applications including 1996-2002 Chevrolet Express 2500, 1996-2002 Chevrolet Express 3500, 1988-2000 Chevrolet C2500, 1988-2000 Chevrolet C3500, 1988-2000 Chevrolet K2500 and 45 more. Check the full fitment list above to confirm your vehicle.
What parts does the BFNG MGC203KAG replace?
The BFNG MGC203KAG is a direct replacement for MGC203KAG, MGC203KAG, 9MGC203KAG, MGC203KAG, 703-1880. See the full interchange list for all compatible replacements.
What are the shipping options for the BFNG MGC203KAG?
Shipping options for the BFNG MGC203KAG are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
What is the price of the BFNG MGC203KAG?
For current pricing on the BFNG MGC203KAG, please call us at 1-866-461-2787. Availability and final order details are confirmed before checkout is completed.
Is the Locking Fuel Cap a direct fit replacement?
Yes, the Locking Fuel Cap by BFNG is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the Locking Fuel Cap come with?
The Locking Fuel Cap comes with the standard BFNG manufacturer warranty. Please check the product specifications for exact warranty terms.


