DEF Cap
$5.16
BFNG
Part # DEF101
4.7(47 reviews)DEF Cap
Fits Ford — 75 vehicle applications
$20.93
Only 10 left in stock
1
Express Checkout
Free ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
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Select your vehicle to check fitment.
BFNG DEF101 Vehicle Fitment
Fits 75 vehiclesThis DEF Cap fits Ford vehicles.
2018-2020 Ford F-150
2017-2018 Ford Transit Custom
2015-2022 Ford Transit
2015-2018 Ford Transit-150
2015-2018 Ford Transit-250
2015-2018 Ford Transit-350
2015-2018 Ford Transit-350 HD
2010-2018 Ford F-250 Super Duty
2010-2018 Ford F-350 Super Duty
2010-2018 Ford F-450 Super Duty
2010-2018 Ford F-550 Super Duty
2010-2012 Ford F-650
2010-2012 Ford F-750
2010 Ford E-350 Super Duty
2010 Ford E-450 Super Duty
BFNG DEF101 Specifications
- Prop 65
- WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
- Thread Diameter
- 1.20 in
- Prop 65
- ADVERTENCIA: Riesgo de cáncer y daños reproductivos - www.p65warnings.ca.gov
- Thread Diameter
- 30.48 mm
- Material
- Plastic, Rubber
- Material
- Plástico, Caucho
BFNG DEF101 Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
DEF101DEF101DEF101DEF101DEF101DEF101DEF101904-5301904-5301CDDEF101DEF1019DEF10110879DEF101703-1960AU5Z5K204AAU5Z5K204AADEF101
BFNG DEF101 Product Description
Effectively prevent diesel exhaust fluid from leaking or spilling through the filler neck. Essential for helping to keep pollutants out of the environment. Replacement restores the diesel emissions fluid system to proper operation.
Key Features
- Designed for optimum fit
- Constructed from high- quality, heat-resistant materials for long-life durability
- Important replacement item to pass inspection in certain states
- Meets or exceeds all OEM specifications
Effectively prevent diesel exhaust fluid from leaking or spilling through the filler neck. Essential for helping to keep pollutants out of the environment. Replacement restores the diesel emissions fluid system to proper operation.
About BFNG
Shop BFNG Diesel Exhaust Fluid (DEF) Filler Cap at Autrex with vehicle fitment details, current pricing, and checkout options for the BFNG DEF101. 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 DEF101
What vehicles does the BFNG DEF101 fit?
The BFNG DEF101 fits 15 vehicle applications including 2015-2022 Ford Transit, 2018-2020 Ford F-150, 2010-2018 Ford F-250 Super Duty, 2010-2018 Ford F-350 Super Duty, 2010-2018 Ford F-450 Super Duty and 10 more. Check the full fitment list above to confirm your vehicle.
What parts does the BFNG DEF101 replace?
The BFNG DEF101 is a direct replacement for DEF101, DEF101, DEF101, DEF101, DEF101 and 13 other part numbers. See the full interchange list for all compatible replacements.
What are the shipping options for the BFNG DEF101?
Shipping options for the BFNG DEF101 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 DEF101 cost?
The BFNG DEF101 is currently listed at $20.93 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 DEF Cap a direct fit replacement?
Yes, the DEF 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 DEF Cap come with?
The DEF Cap comes with the standard BFNG manufacturer warranty. Please check the product specifications for exact warranty terms.
