Air and Fuel Fuel Injection Systems and Components - Electronic

Smartfire

Fuel Injectors

$144.00

SKU: KSM 310cc

In Stock
In Stock
Ships by Aug 5
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

These injectors boast a high impedance coil resistance of 12.5 Ohms and a precise static flow rate of 310 cc/min at 43.5 PSI. Constructed from a durable metal and composite plastic blend, they feature a multi-hole disc nozzle for superior fuel atomization and a basket filter design at the inlet to ensure cleanliness. The package includes pre-installed O-rings and free connectors/wiring clips for many applications. KSM Motorsports tests and flow-matches each injector to confirm its flow rate, ensuring performance that is equivalent to or surpasses OEM specifications. This upgrade is intended to improve throttle response, increase fuel efficiency, and potentially enhance MPG. ECU tuning is required after installation. The injectors are designed for a wide range of Honda and Acura models, including various Civic, Integra, Accord, Prelude, and Del Sol variants from the late 1980s through the early 2000s, as well as certain OBD0, OBD1, B-Series, D-Series, H-Series, and partial F-Series engines. Specific applications may require the removal of the OEM resistor box or the use of included clips, which are provided free of charge for applicable models. Key technical specifications include a 3-inch (76mm) length, an 11mm top O-ring diameter, and an EV1/OBD1 connector type. These high-resistance injectors can be used in low-resistance setups. Compatibility extends to engines such as B18A1, B17A1, F23A1, B18B1, B18C1, B18C5, F23A5, D15B7, D16Z6, B16A2, D16Y5, D16Y7, D16Y8, B16A3, F23A7, and H22A4.

MIA's Description

The Smartfire KSM 310cc is a set of four high-performance fuel injectors designed to replace OEM components. These injectors feature a high impedance coil resistance of 12.5 Ohms and a static flow rate of 310 cc/min at 43.5 PSI. They are constructed with a metal and composite plastic body and a multi-hole disc nozzle for optimal fuel atomization. The top o-ring diameter is 11mm, and they utilize an EV1/OBD1 connector type. Each injector is equipped with a basket filter at the inlet.

Fitment

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Specifications

BrandSmartfire
Part NumberKSM 310cc
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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