Performance Radiator for Jaguar XJ8 (2005-2009) 4.2L Automatic

Heavy-Duty All-Aluminum Performance Radiator for 2005-2009 Jaguar XJ8

What it Does: Direct-fit aluminum cooling upgrade engineered to replace failure-prone factory plastic-tank units and stabilize operating temperatures on the 4.2L V8 Jaguar XJ8.

The Stock XJ8 Cooling System Weakness

Factory X350 cooling modules rely on composite plastic end-tanks crimped onto an aluminum core with rubber gaskets. Over repeated thermal cycles, radiant engine bay heat embrittles the plastic seams, leading to stress fractures, gasket degradation, and sudden coolant loss. Additionally, the restrictive stock single-row core struggles with heat dissipation under sustained loads, risking cylinder head distortion on the all-aluminum AJ-V8 engine.

The Engineering Solution

This heavy-duty radiator features a 4-row crossflow core fabricated entirely from aircraft-grade aluminum. Featuring 2 mm thick TIG-welded end tanks and a vacuum-brazed core, it eliminates mechanical crimps and failure-prone plastic. A dense 14–16 fins-per-inch matrix with 3/8-inch tube spacing dramatically expands effective heat exchange surface area. An integrated internal transmission oil cooler ensures fluid temperatures match optimal engine operating thresholds without auxiliary plumbing.

Technical Specifications

Compatibility

• 2005-2009 Jaguar XJ8 Base Sedan 4.2L V8 Automatic
• 2005-2009 Jaguar XJ8 L Sedan 4.2L V8 Automatic
• 2005-2009 Jaguar Vanden Plas Sedan 4.2L V8 Automatic

The Jaguar Precision Standard

Engineered to exact European OE dimensions for a direct drop-in installation with factory mounts, fan shrouds, and transmission cooler lines—retaining factory climate control calibration without modifications or warning lights.