Manley H-Tuff Beam Connecting Rod Set 5.216in Center to Center WRX 02-14 / STI 04-21 | 15036-4

Product Fitment:

2002-2014 Subaru WRX

2004-2021 Subaru STI

When you're assembling a high‑output Subaru EJ20 or EJ25 engine, the connecting rods become one of the most critical components. The Manley Performance H‑Tuff Beam Connecting Rod Set, part number 15036‑4, is engineered to meet the rigorous demands of boosted or high‑revving applications.

Forged from 4340 chromoly steel and finished to exacting tolerances, each rod is individually magnafluxed, shot‑peened, stress‑relieved, and weight matched to within ±1.5 grams. These rods measure 5.216″ in center‑to‑center length and are designed with stock big‑end journal (2.165″) and wrist‑pin size (0.9055″ / 23 mm) for direct compatibility with Subaru EJ engines.

Key Features & Specifications:

• Material: Forged 4340 steel, shot‑peened, stress‑relieved, magnafluxed for maximum durability.

• Center‑to‑center length: 5.216″ – engineered for Subaru EJ20/EJ25 platform.

• Big‑end journal diameter: 2.165″; Wrist‑pin diameter: 23 mm (0.9055″) – maintains factory dimensions for ease of installation.

• Rod weight: Approximately 580 grams per rod, weight‑matched set.

• Compatible with ARP 2000 (or optional stronger) rod bolts for best high‑power capability.

• Built to support high horsepower levels when paired with proper supporting hardware.

Why Choose This Rod Set?
If your Subaru + turbo build is heading into serious territory — elevated boost, high RPM, heavy duty duty cycle — stock rods can become a limiting factor. These Manley H‑Tuff beams give you the strength, precision fitment, and quality engineering needed to ensure your internals keep up with your horsepower ambitions. Whether you’re doing a high‑boost street car or an aggressive track car, these rods deliver the foundation you need.

Fitment & Installation Notes:

• Because these retain stock journal dimensions, installation is simplified: existing crank and bearings can often be reused (pending inspection), allowing for efficient build cycles.

• After installation, ensure correct bolt stretch or torque, check rod bearing clearances, measure end‑play, and re‑balance rotating assembly if required.