650cc Injectors for NA/NB Miata

Name: 650cc Injectors for NA/NB Miata
Brand: DeatschWerks
SKU: 18U-05-0650-4
Price: 185.38 USD
Availability: InStock
Rating: 5.0 (5 reviews)

650cc Injectors for NA/NB Miata - Main image

$185.38 ~~$299~~ In stock

Category: Fuel Injector

DeatschWerks offers a matched set of 4 650cc fuel injectors specifically designed for NA/NB Mazda Miata applications. These injectors are a direct-fit upgrade for owners seeking increased fuel delivery for modified engines.

Matched set of four injectors for consistent flow across all cylinders
650cc flow rate suitable for higher horsepower builds
Vehicle-specific design for NA/NB Mazda Miata
Brand: DeatschWerks

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Customer Reviews (5.0 / 5 · 5 reviews)

Matthew G. ★★★★★ Oct 22, 2026

Swapped out my stock injectors for these 650s and the direct-fit design made installation a breeze on my '94. The matched set gave me consistent spray patterns across all four cylinders, and my tuner said the fuel delivery is spot-on now.

Isabella O. ★★★★★ Oct 21, 2026

Plugged these in on my '99 and the idle smoothed out immediately — they're a true direct-fit swap. The matched set means no guessing on flow rates, which saved me a ton of tuning time.

Sofia L. ★★★★★ Oct 20, 2026

The 650cc flow rate is spot-on for a boosted setup, and the direct-fit design meant no fiddling with adapters or spacers. Installation took me under an hour, and the idle stayed smooth after the swap.