JAPANPARTS Piston Ring (RC21004) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Compatible with MITSUBISHI vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 34-21004, 421004J. Matching these numbers confirms a like-for-like replacement with no loss of function. JAPANPARTS is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.

Japan Parts, founded in Italy, is a specialist aftermarket brand focused on replacement parts for Japanese and Korean vehicles. Japan Parts offers an extensive catalogue covering braking, filtration, suspension, steering, engine, and drivetrain components for Toyota, Honda, Nissan, Mazda, Mitsubishi, Hyundai, and Kia. All products are manufactured to OE-equivalent quality standards with thorough testing procedures. For workshops and owners of Japanese and Korean vehicles seeking reliable, well-priced alternative parts, Japan Parts delivers quality and coverage you can depend on.