Air and Fuel› Fuel Injection Systems and Components - Electronic

Weapon R

Weapon R 90+ Subaru (1.8-2.5L) / 86-05 Nissan (1.5-2.0L) / 86-05 Mazda (1.6-3.0L) Fuel Rail Adapter

$33.43

SKU: W003 958-112-103

In Stock
In Stock
Ships by Jun 20
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Weapon-R 958-112-103 Fuel Rail Adapter is a precision-machined fitting designed to eliminate the factory OEM fuel pressure regulator. This allows for higher, unrestricted fuel flow to an aftermarket adjustable fuel pressure regulator (FPR).

Key features include its direct bolt-on replacement for the OEM regulator port on compatible fuel rails and its ability to enable fine-tuned fuel pressure adjustment. It is ideal for high-performance and forced induction fuel system upgrades.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandWeapon R
Part NumberW003 958-112-103

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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