Locking Fuel Cap
$23.44
BFNG
Part # MGC637
4.7(47 reviews)Fuel Tank Cap
Fits Ram, Dodge, Mercedes-Benz & more — 196 vehicle applications
$12.91
In Stock
For pickup, you can select Ottawa or Winchester at checkout
1
Express Checkout
Free ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
Will this fit your vehicle?
Select your vehicle to check fitment.
BFNG MGC637 Vehicle Fitment
Fits 196 vehiclesThis Fuel Tank Cap fits Ram, Dodge, Mercedes-Benz, Chrysler and 4 more makes vehicles.
2011-2019 Dodge Journey
2011-2016 Dodge Challenger
2008-2014 Dodge Avenger
2007-2010 Dodge Dakota
2006-2013 Dodge Durango
2004-2010 Dodge Ram 1500
2003-2006 Dodge Stratus
1999-2020 Dodge Grand Caravan
1999-2007 Dodge Caravan
BFNG MGC637 Specifications
- Prop 65
- WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
- Thread Diameter
- 1.55 in
- Prop 65
- ADVERTENCIA: Riesgo de cáncer y daños reproductivos - www.p65warnings.ca.gov
- Thread Diameter
- 39.37 mm
- Material
- Plastic
- Material
- Plástico
BFNG MGC637 Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
663740637MGC637MGC637MGC637MGC6376637P663766379MGC63710838YMGC637703-178052030380AB52030380AA52124596AA10838Y
BFNG MGC637 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
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
- Independently tested for emission control
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 MGC637. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
4.7out of 5
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 MGC637
What vehicles does the BFNG MGC637 fit?
The BFNG MGC637 fits 32 vehicle applications including 2014-2024 Ram ProMaster 1500, 2014-2024 Ram ProMaster 2500, 2014-2024 Ram ProMaster 3500, 2022-2024 Ram 1500 Classic, 1999-2020 Dodge Grand Caravan and 27 more. Check the full fitment list above to confirm your vehicle.
What parts does the BFNG MGC637 replace?
The BFNG MGC637 is a direct replacement for 6637, 40637, MGC637, MGC637, MGC637 and 12 other part numbers. See the full interchange list for all compatible replacements.
What are the shipping options for the BFNG MGC637?
Shipping options for the BFNG MGC637 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.
How much does the BFNG MGC637 cost?
The BFNG MGC637 is currently listed at $12.91 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Fuel Tank Cap a direct fit replacement?
Yes, the Fuel Tank 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 Fuel Tank Cap come with?
The Fuel Tank Cap comes with the standard BFNG manufacturer warranty. Please check the product specifications for exact warranty terms.
