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- Description
- Fitment
- Warranty and Refund
- Reviews
Keep your diesel emissions system sealed and working right with the Motorad DEF101 DEF filler cap. This screw-on, threaded cap is built to close off the diesel exhaust fluid filler neck, helping prevent leaks or spills that can waste fluid and create a mess around the tank. A tight seal also plays a part in keeping DEF pollutants contained rather than escaping into the surrounding environment. If your factory cap is cracked, stripped, or missing, replacing it with the DEF101 helps restore proper operation to the DEF system so your emissions controls can do their job. Sized with a 1.20 in (30.48 mm) thread diameter and finished in blue with a white accent, this cap is designed to fit the filler neck opening on covered Ford diesel applications, including Super Duty trucks, Transit vans, and medium-duty F-650/F-750 models spanning 2010-2022. One cap is all you need per application.
Features
- Screw-on threaded design creates a secure seal to help stop DEF leaks and spills at the filler neck
- Helps keep DEF pollutants contained, supporting cleaner operation of your emissions system
- Replacement cap restores proper function to the diesel exhaust fluid filler system
- 1.20 in (30.48 mm) thread diameter sized to match covered Ford diesel filler necks
- Simple one-per-application design makes replacement straightforward with no guesswork on quantity
Application Summary
2010 Ford E-350 Super Duty 6.0L -CC 363CID V8 OHV 32 Valve Turbocharged DIESEL2010 Ford E-450 Super Duty 6.0L -CC 363CID V8 OHV 32 Valve Turbocharged DIESEL
2010 Ford F-250 Super Duty 6.4L -CC 391CID V8 OHV 32 Valve Turbocharged DIESEL
2010 Ford F-350 Super Duty 6.4L -CC 391CID V8 OHV 32 Valve Turbocharged DIESEL
2010 Ford F-450 Super Duty 6.4L -CC 391CID V8 OHV 32 Valve Turbocharged DIESEL
2010 Ford F-550 Super Duty 6.4L -CC 391CID V8 OHV 32 Valve Turbocharged DIESEL
2010 Ford F-650 7.2L -CC 441CID L6 U/K U/K Valve Turbocharged DIESEL
2010 Ford F-750 7.2L -CC 441CID L6 U/K U/K Valve Turbocharged DIESEL
2010-2012 Ford F-650 6.7L -CC 408CID L6 OHV 24 Valve Turbocharged DIESEL
2010-2012 Ford F-750 6.7L -CC 408CID L6 OHV 24 Valve Turbocharged DIESEL
2011-2018 Ford F-250 Super Duty 6.7L 6651CC 406CID V8 OHV 32 Valve Turbocharged DIESEL
2011-2018 Ford F-350 Super Duty 6.7L 6651CC 406CID V8 OHV 32 Valve Turbocharged DIESEL
2011-2018 Ford F-450 Super Duty 6.7L 6651CC 406CID V8 OHV 32 Valve Turbocharged DIESEL
2011-2018 Ford F-550 Super Duty 6.7L 6651CC 406CID V8 OHV 32 Valve Turbocharged DIESEL
2015-2016 Ford Transit 2.2L -CC -CID L4 U/K U/K Valve Turbocharged DIESEL
2015-2018 Ford Transit-150 3.2L -CC 195CID L5 DOHC 20 Valve Turbocharged DIESEL
2015-2018 Ford Transit-250 3.2L -CC 195CID L5 DOHC 20 Valve Turbocharged DIESEL
2015-2018 Ford Transit-350 3.2L -CC 195CID L5 DOHC 20 Valve Turbocharged DIESEL
2015-2018 Ford Transit-350 HD 3.2L -CC 195CID L5 DOHC 20 Valve Turbocharged DIESEL
2017-2018 Ford Transit Custom 2.2L 2198CC 134CID L4 DOHC 16 Valve Turbocharged DIESEL
2017-2020 Ford Transit 2.2L 2198CC 134CID L4 DOHC 16 Valve Turbocharged DIESEL
2018, 2020 Ford F-150 3.0L 2993CC 183CID V6 DOHC 24 Valve Turbocharged DIESEL
2019 Ford F-150 3.5L 3496CC 213CID V6 DOHC 24 Valve Turbocharged GAS
2021 Ford Transit 2.0L 1995CC 122CID L4 DOHC 24 Valve Turbocharged DIESEL
2022 Ford Transit 2.0L 1995CC 122CID L4 DOHC 16 Valve Turbocharged DIESEL
Specifications
- Brand: Motorad
- Part Number: DEF101
- Part Type: Diesel Exhaust Fluid (DEF) Filler Cap
- UPC: 055644961019
- GTIN: 00055644961019
- Item Dimensions: 3.0000 x 3.0000 x 3.2500 IN
- Package Dimensions: 3.0000 x 3.0000 x 3.2500 IN
- Package Weight: 0.1900 PG
- Package Quantity: 1 EA
- Material: Plastic, Rubber
- Color: Blue
- Inside Diameter: 1.20
- Inside Diameter: 30.48
- Attachment Type: Threaded
- Cap Depth: 0.91
- Cap Depth: 23.11
- Universal Or Specific Fit: Specific
- Grade Type: OEM
Interchange
- CST: DEF101
- Parts Master: DEF101
- Motorad: DEF101
- FVP Caps & Thermostats: DEF101
- Pronto: DEF101
- Federated: DEF101
- Mighty Distributing System: DEF101
- Dorman: 904-5301
- Dorman: 904-5301CD
- Duralast: DEF101
- Duralast: DEF101
- Worldparts: 9DEF101
- Stant: 10879
- Pep Boys: DEF101
- Balkamp: 703-1960
- Ford: AU5Z5K204A
- Ford: AU5Z5K204AA
- Carquest Premium Caps and Stats: DEF101
Warranty
- Warranty Duration: 12 Months
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.









