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SKU:
NLT2D04439
Ships for free in 2–4 business days.
Yamaha YZ/WR 250F 450F EFI Fuel Pump 33D-13907-02-00
$115.99
In Stock
$115.99
Sale price
$115.99
Regular price
Aftermarket in-tank EFI fuel pump assembly for select Yamaha YZ250F, YZ450F, YZ250FX, YZ450FX, WR250F, and WR450F models; replaces 33D-13907-02-00 and 33D-13907-01-00.
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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
- Yamaha YZ250F — 2014-2023
- Yamaha YZ450F — 2010-2022
- Yamaha YZ250FX — 2015-2019
- Yamaha YZ450FX — 2016-2018
- Yamaha WR250F — 2015-2019
- Yamaha WR450F — 2012-2018
Product Overview
A fuel-injected Yamaha that does not prime, takes repeated starts, stalls hot, or loses power at high demand may have low pump pressure. This assembly is for cases where electrical and pressure testing point to the in-tank pump rather than the injector, relay, or ignition system.
Race-bike tanks collect dirt quickly. Clean the tank and inspect the pickup, filter, connector, and hose so the new pump is not fed the same contamination.
Key Features & Performance
- In-tank EFI fuel pump assembly
- Restores pressurized fuel delivery
- Covers multiple Yamaha 250F and 450F off-road models
- Aftermarket replacement for 33D-series pump references
Replaces Part Numbers
- 33D-13907-02-00
- 33D-13907-01-00
Common Uses
- No fuel-pump prime
- Hot stalling or hard restart
- Lean power loss under load
- Low pressure confirmed at the fuel system
Technical Specifications
- Product Type: Electric EFI fuel pump assembly
- Mounting: In-tank
- Fuel System: Electronic fuel injection
- Replacement Type: Aftermarket
Installation & Fitment
- Work away from sparks and disconnect the battery
- Drain and clean the tank before opening it
- Protect seals and connectors during assembly
- Prime the system and inspect for leaks
Compatibility Notice
Match exact model/year, original pump number, tank opening, electrical connector, outlet, filter arrangement, and pressure specification.
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Frequently Asked Questions
Q: Can the pump make noise and still be weak? A: Yes. A running pump may not hold required pressure when hot or under load.
Q: Does it fit carbureted WR/YZ models? A: No. This is for the listed fuel-injected applications.
Q: Why clean the tank? A: Debris can damage the replacement pump and injector.
Q: What else causes no prime? A: Battery voltage, fuse, relay, wiring, ground, and ECU command should be checked.
Part Summary
keywords: Yamaha 33D-13907-02 fuel pump, YZ250F EFI pump, YZ450F hard start fuel pump, WR450F in tank pump, YZ250FX fuel pressure repair, aftermarket Yamaha EFI module
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.