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SKU:
NLT1G00266
Ships for free in 2–4 business days.
Komatsu Locking Fuel Cap 20U-04-21360 with Keys
$28.99
In Stock
$28.99
Sale price
$28.99
Regular price
This new aftermarket locking fuel-tank cap with keys replaces Komatsu 20U-04-21360 and 20U-04-21361 for compatible dozers, compact excavators, and equipment powered by selected 4D94E-1 engines.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Komatsu D20A-7, D20P-7A, D20PG-7A and D20PL-7
- Komatsu D21A-7, D21A-7T, D21AG-7, D21P-7A and D21PG-7A
- Komatsu D31A-20, D31P-20 and D37A-5 applications using this cap
- Komatsu PC40MR-1, PC45MR-1, PC50UD-2, PC50UU-2 and PC75UU-2/3
- Komatsu PC128US-1, PC128UU-1 and PC228UU-1 applications using the listed reference
Product Overview
A missing cap, damaged lock, hardened seal, or cap that no longer tightens leaves diesel exposed to rain, dust, and unauthorized access. This replacement restores the closure point when the filler neck and vent system are still in good condition.
The cap closes and locks the matching fuel filler. It does not repair a bent filler neck, clogged tank vent, contaminated tank, or damaged retaining hardware.
Compare the neck diameter and tabs or threads, cap depth, venting design, lock and key, original number, model, and serial number. Do not force a cap that does not seat naturally.
Key Features & Performance
- Locking fuel cap supplied with matching keys
- Sealing surface for the compatible Komatsu filler neck
- Helps keep dirt and water out of stored diesel
- Replacement after key loss, theft damage, or seal failure
Replaces Part Numbers
- 20U-04-21360
- 20U-04-21361
Common Uses
- Replacing a lost fuel cap on a jobsite machine
- Restoring a lock that no longer turns
- Correcting a cap seal that lets water into the tank
Technical Specifications
- Product Type: Locking diesel fuel-tank cap
- Equipment: Compatible Komatsu dozers and excavators
- Kit Contents: Cap and matching keys as shown
- Condition: New aftermarket replacement
Installation & Fitment
- Clean debris from the filler neck
- Inspect the neck for dents and corrosion
- Compare locking lugs and seal depth
- Test lock operation before returning the machine to service
- Check that the tank vent works correctly
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Can this stop water from entering the tank? A: A correct undamaged seal helps, but the filler neck and tank vent must also be inspected.
Q: Does the cap vent the tank? A: Venting varies by machine. Match the original cap design and parts catalog.
Q: Will one key fit other Komatsu machines? A: Do not assume so; use the keys supplied with this cap.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Komatsu 20U-04-21360 fuel cap, 20U-04-21361 locking cap, D21A-7T fuel tank cap, Komatsu excavator lost fuel cap, locking diesel cap with keys
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.