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SKU:
NLT1Q00300
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Pair of Locking Diesel Fuel Caps for Freightliner – Replaces 03-37017-002
$106.99
In Stock
$106.99
Sale price
$106.99
Regular price
New aftermarket pair of locking quarter-turn diesel fuel caps with keys for compatible Freightliner Cascadia, Columbia, Century, Coronado, Classic, and FLD models; replaces 03-37017-002/03-37017-000 style caps.
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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
- 2008–2018 Freightliner Cascadia 113/125
- 2001–2018 Freightliner Columbia 112/120—verify year and neck
- 1997–2010 Freightliner Century 112/120
- 2003–2018 Freightliner Coronado
- 1994–2010 Freightliner FL120/FL132 Classic
- 1994–2009 Freightliner FLD112/FLD120
- Not for Freightliner M2
Product Overview
Missing, loose, non-locking, or damaged caps can allow contamination into saddle tanks and leave fuel unsecured. This pair restores matching push-and-twist caps for trucks using the four-prong, non-vented Freightliner opening.
These caps do not fit the Freightliner M2 and are not tank vents. Confirm the filler-neck prongs, inner diameter, venting system, tether arrangement, and original number.
Key Features & Performance
- Two locking diesel caps with keys
- Quarter-turn push-and-twist design
- Cast-metal style with tether provision
- For compatible Freightliner saddle-tank filler necks
Replaces Part Numbers
- 03-37017-002
- 03-37017-000
Common Uses
- Replacing lost or damaged saddle-tank caps
- Adding keyed fuel access
- Renewing caps with worn seals or tether hardware
Technical Specifications
- Product Type: Locking diesel fuel cap pair
- Closure: Quarter-turn/four-prong
- Venting: Non-vented cap; tank must be vented separately
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Confirm the filler neck uses the four-prong quarter-turn design
- Inspect the neck and seal surface for damage
- Verify the tank has its correct separate venting system
- Lock both caps and check retention before driving
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Production date, engine type, transmission, trim, serial number, and previous repairs can change fitment. Compare the original part, mounting points, dimensions, connections, and listed reference numbers before purchase.
Frequently Asked Questions
Q: Do these fit a Freightliner M2? A: No. The verified application specifically excludes M2.
Q: Are the caps vented? A: No. The fuel tanks must be vented through the vehicle's intended system.
Q: How many caps are included? A: Two locking caps.
Q: What is the main locking-cap reference? A: 03-37017-002.
Part Summary
keywords: 03-37017-002 fuel cap, Freightliner locking diesel cap, Cascadia fuel cap pair, Columbia quarter turn cap, Freightliner saddle tank lock
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.