Home YTR YZ250F / YZ426F / WR400F / WR450F Accelerator Pump Diaphragm

YTR YZ250F / YZ426F / WR400F / WR450F Accelerator Pump Diaphragm

NOW $57.47
Or 4 interest-free payments of $14.36
In stock at 1 of our locations
🚛 Free NZ shipping
🔒 12 month warranty on all parts
NZ WOF compliant
🔧 Fitting available NZ wide

Accelerator Pump Diaphragm for Yamaha YTR YZ250F, YZ426F, WR400F, WR450F
Includes: 1 x Accelerator Pump Diaphragm
Fits Models: Yamaha YTR YZ250F, YZ426F, WR400F, WR450F
Model Years: 2003-2023
Submodels: All submodels within these years
Engine Options: 250cc, 426cc, 400cc, 450cc
Description: Replace worn or damaged accelerator pump diaphragms to ensure smooth throttle response and optimal engine performance. Compatible with Yamaha off-road bikes, this diaphragm enhances fuel delivery, improves acceleration, and maintains engine reliability. Easy to install, it provides a cost-effective way to restore your motorcycle’s functionality and riding experience.
Features: Designed specifically for Yamaha YZ and WR models from 2003-2023, ensuring perfect fit and performance. Offers reliable fuel pump operation, prevents leaks, and supports consistent throttle response. Ideal for maintenance, repairs, or upgrades to keep your bike running at peak performance.
Keywords: Yamaha YZ250F, YZ426F, WR400F, WR450F, accelerator pump, diaphragm, motorcycle parts, off-road bike, throttle response, engine repair

Shipping Information

Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.


The Kren Bits journey:

  • Order received — Day 0
  • With fulfilment — Day 1–2
  • Heading to courier — Day 2–4
  • Shipped — Day 3–7
  • Almost there — Day 5–10
  • Delivered — Day 5–14

Where your part ships from:

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