zozoye Overflow Coolant Recovery Tank & Cap for Yamaha Grizzly 660 / Raptor 700 (2002–2024) — Direct-Fit, OEM-Style Replacement

A direct-fit overflow coolant recovery tank and matching cap from zozoye designed to replace OEM parts 5KM-21871-00-00 and 1S3-21875-00-00 on select Yamaha Grizzly 660 and Raptor 700 models.

If your Yamaha ATV’s original coolant reservoir is cracked, discolored, or leaking, this replacement kit restores proper coolant overflow function without expensive dealer parts. zozoye engineered this tank and cap kit to match the mounting points and hose connections on compatible model years so you can swap it in quickly and ride with confidence.

Will this tank fit my Yamaha Grizzly 660 or Raptor 700?

Compatibility is built into the design: the kit matches factory dimensions and uses the listed OEM part numbers for validation. It fits a wide range of model years, but double-check your VIN or parts manual if you have an uncommon variant or aftermarket mods.

• Compatible models: YFM660 Grizzly 660 (2002–2008).
• Compatible models: YFM700 Raptor 700 (2006–2024), Raptor 700 SE (2008–2024), and Raptor 700R (2011–2024).
• OEM references included: 5KM-21871-00-00 and 1S3-21875-00-00 for cross-checking.

How straightforward is installation for a DIY mechanic?

Installation is designed to be hassle-free for anyone with basic tools and light mechanical experience. The tank uses the same mounting points and hose connections as the original, so removal of the old unit and fitting the new one is typically straightforward and quick.

• Supplied kit: 1x recovery tank and 1x cap for immediate replacement.
• Fast steps: drain coolant if needed, unbolt old tank, swap hoses, bolt new tank in place, refill coolant.
• Support: zozoye customer service available for fitment or installation questions.

What materials and build quality can I expect from this replacement kit?

zozoye constructs the tank to withstand engine bay temperatures and road vibration while maintaining sealing performance at the cap. The manufacturing tolerances align with OEM specifications to minimize leaks and ensure long service life under typical ATV conditions.

• Durable plastic formulation resistant to coolant fluids and heat cycles.
• Cap designed to match OEM sealing pressure and fitment for correct overflow function.
• Precision-molded mounting points to reduce stress and ensure stable attachment.

How do I verify this is the correct part before purchasing?

Confirm fitment by comparing the OEM numbers and visual details on your existing tank to the product page images and part references. Measuring mounting hole spacing and hose diameters or checking your service manual will eliminate uncertainty.

• Check your current tank for OEM numbers 5KM-21871-00-00 / 1S3-21875-00-00.
• Compare mounting points and hose connections to the product photos on the listing.
• Contact zozoye support with your model year and VIN if you need direct confirmation.

Who is this for: This zozoye overflow coolant recovery tank and cap kit is intended for Yamaha owners maintaining or restoring Grizzly 660 and Raptor 700 ATVs across the listed years who want a cost-effective OEM-compatible replacement. It suits DIY mechanics, small repair shops, and riders replacing a damaged or aged reservoir who need a precise-fit, ready-to-install option without sourcing dealer parts.