Aircraft Spruce & Specialty Co.
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Overview
| The UD-3 flush fuel cap assembly is an unvented cap similar in design to the #5 style cap. The aluminum mounting ring has a 2" dia. opening and an overall dia. of 3-3/4 inch. It may be riveted, bolted or molded to the tank. It is currently used on many popular homebuilts such as the RV’s, Lancair, Velocity & White Lightning. Specify flat or contoured adapter. |
Tech Sheet
Reviews
Worked perfectly for the fuel caps for an RV-10. Miine had worn and would no longer snap into place when closing. The latch would want to sit slightly proud above the cap. Thought I would have to replace the whole cap until finding this part. Worked PERFECT!
Verified Purchase
LATCH AND POST FOR UD-3 GAS CAP
welded this to a Midget Mustang header tank and it works great! I highly recommend this.
Verified Purchase
UD-3-C FUEL CAP W/ CONT ADAPT
Yep, it is the fuel cap for the RV. I didn’t need to adjust, just dropped in the tank and I was back in business
Verified Purchase
UD-3 GAS CAP
perfect replacement. You dont realize how worn out your current ones are until you get a new ones
Verified Purchase
UD-3 GAS CAP
Verified Purchase
UD-3-F FUEL CAP W/FLAT ADAPTOR
Exactly what I needed
Verified Purchase
UD-3 GAS CAP
Great part as per the catalogue.
Lancair 360 perfect fit and fantastic service again from Spruce
I used this “cap only” to rebuild a 18 year old cap on my F1 Rocket. The old cap over center feel was getting a bit numb. The new parts fit beautifully and now my caps work like new. A 5 minute job, should have done this sooner.
Jim, I needed the Fuel Cap before the July 4 holiday weekend. Called Josh, he handled the sale and it arrived 2 days later! Very pleased with the response from your staff, especially Josh who got the job done!!! I was able to take advantage of the weekend and fly my aircraft!!!! Kudos to Aircraft Spruce, Josh and your staff who made my weekend! Thanks, John
Q&A
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
You can use either 05-02146 (USHER O-RING 2-325 LARGE) or 05-02147 (USHER O-RING 2-012 SMALL), which can be found in the "Accessories" tab.
There is no functional difference. They are used in two different spots of the fuel cap. Both should be replaced annually or as needed. Please see the "Tech Sheet" tab for complete details of where each is used.
Per the supplier: It is 6061 alloy.
The function of the contoured adapter is the shape of the ring that the cap will fit into. The contoured ring has a small flange to it compared to the flat adapter which has a flat ring.
Yes, these are compatible with diesel and jet fuel.
Each weighs .375 lbs
Yes, but this is a special order. Please contact sales department for pricing and lead time details.
P/N# 05-01062 will be 3.80".
3.80"
Contoured is curved to match the curve of a wing.
