Product Title

CNC Machined Sr20 S14 S15 billet valve cover

Description

CNC 6061-T6 aftermarket Sr20 S14 S15 billet valve cover. Oversized -10AN breathers prevent oil blow-by and gasket leaks in SR20DET track builds.

Product Overview

Cast covers warp under high-boost track conditions, causing persistent oil blow-by. We engineered the Sr20 S14 S15 billet valve cover to permanently resolve these crankcase pressure issues. Acting as a heavy-duty SR20 billet valve cover, it completely replaces porous OEM castings. Integrating a CNC billet valve cover SR20 structure guarantees maximum structural integrity. This Nissan S14 billet valve cover and Nissan S15 billet valve cover solution ensures a rigid, leak-proof environment for professional circuit racing.

Sr20 S14 S15 billet valve cover supplier

Technical Specifications

Engine Fitment	Nissan SR20DET "Notchtop" Engines (Silvia S14, S15)
Material	6061-T6 Aerospace-Grade Billet Aluminum
Manufacturing	5-Axis Precision CNC Machined (Solid block construction)
Vent & Oil Control	Integrated -10AN breather ports with multi-stage internal baffling for maximum oil separation.
Installation & Supply	Direct replacement for factory cover (compatible with OEM gaskets); factory-direct wholesale and custom finishes available.

Billet Machining & Internal Baffling

Cast aluminum distorts during extreme thermal cycling, ruining gasket seals. We mill units from solid 6061-T6 aluminum blocks to prevent structural deflection. Sourcing a China Sr20 S14 S15 billet valve cover secures dimensional stability under high engine temperatures. We machine an advanced internal baffling system directly into the housing, ensuring superior crankcase pressure relief by efficiently separating oil vapor. As a direct SR20 billet valve cover manufacturer, we enforce strict O-ring groove tolerances to guarantee a perfect mechanical seal.

Ventilation & Track Durability

Aggressive track driving demands maximized crankcase evacuation. We equip this aftermarket Nissan S15 billet valve cover with oversized -10AN breather ports tapped for custom catch can routing. The heavy-duty construction resists harsh SR20 valvetrain harmonics. It withstands aggressive motorsport use, providing physical engine protection and a rigid machined finish that survives brutal track stress without failure.

Factory Supply & Quality Assurance

Operating a B2B CNC factory with 15 years export experience, we follow strict ISO standards. Each Sr20 S14 S15 billet valve cover passes 3D CMM inspection for flange flatness. We provide Material Test Sheets for bulk orders, ensuring reliable global logistics execution.

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