Part #: 21S-00-0440-4
Deatschwerks performs flow balancing and quality assurance testing on every set of injectors they produce, ensuring that the end product is top-notch. Deatschwerks injectors are tested and analyzed at over 40 data points on DW's in-house New Age Technologies injector flow bench. Deatschwerks injectors are remanufactured by DW to the specified flow; you can rest assured that you are receiving a top-quality, reliable, well-performing product at a price that is hard to pass up.
Deatschwerks fuel injectors for the MSP feature drop-in fitments for a simple installation. Since they are made from new Denso manufactured injectors, they will fit directly into the stock or any aftermarket fuel rail. Deatschwerks Mazdaspeed Protege fuel injectors will require some sort of fuel management system to work properly (AEM EMS, Split Second, Megasquirt, etc.)
Injectors are only sold in sets of 4.
ECU tuning is required.
Any returns for an exchange or refund will be allowed within 30 days from the receipt of your order and must be authorized prior to shipping with an RMA Number (Return Merchandise Authorization). To receive your return instructions and RMA# please use our online form under Returns and Exchanges! Once you receive your return instructions please ship out the item at your earliest convenience and provide the tracking number to your customer service rep. The customer will be responsible for all shipping fees. Before shipping your product back please make sure you package it up exactly how you received it and in all of its original packaging. All items must be in brand new and resalable condition. Once the item is received it will be inspected and a credit will be issued accordingly. All returns are subject to a 15% restocking fee. Any returns received without an RMA# will be charged a restocking fee and any shipping fees associated with the return. An item that does not ship directly from IIR's warehouse is considered a "special order" item and no returns will be authorized.