CSF 3164 High-Performance Radiator for 04-08 Mazda RX-8 1.3L R2

Vehicle Fitment

• 2004-2008 Mazda RX-8 (Base/GT/Sport/Touring, 1.3L R2 rotary, RWD, Manual Transmission)

Fitment Notes

• Fits manual transmission models only - does not fit automatic transmission RX-8
• Drop-in fitment using OEM mounting points and factory fan shroud
• Not compatible with turbocharged or engine-swapped configurations

Features

• 42mm dual-row high-efficiency aluminum core with CSF B-Tube technology
• 15% better cooling efficiency compared to standard tube radiators
• Multi-louvered 6.5mm fin design for maximum surface area and heat transfer
• Precision TIG-welded construction for durability under high heat and pressure
• Polished finish with CNC-machined brackets for a clean factory-like install
• Leak tested at 150% operating pressure to ensure reliability
• Drop-in OEM fitment for quick installation without modifications
• Hand-assembled and pressure tested in the USA

Specifications

• Core Thickness: 42mm
• Rows: 2
• Material: Full aluminum (core and tanks)
• Finish: Mirror-polished
• Mounting: Direct OEM replacement
• Inlet/Outlet: Factory-style hose fittings
• Compatible Fans: Uses stock fan shroud
• Weight: Approx. 16 lbs

Included Components

• 1x CSF 3164 High-Performance Aluminum Radiator
• 1x CNC billet drain plug
• 1x Installation guide

Product Description

The CSF 3164 is a direct-fit high-performance aluminum radiator for the 2004-2008 Mazda RX-8 equipped with the 1.3L R2 rotary engine and manual transmission. Engineered using CSF's exclusive B-Tube core technology and high-density multi-louvered fins, it provides superior heat dissipation over standard replacement units - making it ideal for spirited street driving and track applications.

This unit features a polished, TIG-welded aluminum construction with CNC-machined fittings, delivering OEM fitment while improving performance and aesthetics. Designed to reuse the factory fan shroud and mounting points, the CSF 3164 requires no modifications for installation. Leak tested and hand-assembled in the USA, it's a reliable upgrade for any RX-8 owner looking to enhance cooling efficiency and system durability.