Koyo 1999-2001 Impreza RS / Outback 1999-2002 Forester 2.5L Performance Radiator

Koyorad VH091163 – Hyper V-Core Aluminum Racing Radiator for 1999–2001 Subaru Impreza & 1999–2002 Forester (Manual Transmission)
Upgrade your aging Impreza or Forester with the Koyorad VH091163 Hyper V-Core radiator—designed to replace stock units and deliver serious thermal performance. Direct-fit for manual-transmission:

• 1999–2001 Subaru Impreza (all models, 2.2/2.5L)
• 1999–2002 Subaru Forester (2.5L non-turbo)

Unlike factory radiators that use fragile plastic tanks prone to cracking, the VH091163 is a full aluminum, dual-row Hyper V-Core unit engineered for high heat-load environments. Its precise tube-and-fin alignment, and Nocolok brazed + TIG-welded construction, ensure maximum cooling capacity, structural integrity, and longevity.

Key Features:

• Full aluminum construction—no plastic end tanks to crack or fail
• 36 mm Hyper V-Core for increased cooling efficiency in tight engine bays
• Dual-row high-density core with advanced fin/tube design
• TIG-welded tanks and Nocolok brazed tubes/fins/brackets for durability and vibration resistance
• OEM-based design: retains factory fan shroud, mounts, and hoses for a seamless install
• Includes billet filler neck and integral 1/8 PT accessory port with plug

Built to handle high-boost, track, rally, or spirited weekend driving, this radiator provides 20–30% more cooling than OEM units—keeping temps under control and reducing the risk of overheating.

Fits:

Subaru Impreza 1999–2001, manual, all trims: RS, Outback, L
Subaru Forester 1999–2002, manual, 2.5L non-turbo

Notes:

• Manual transmission only
• 1999 Impreza must have a downflow radiator; crossflow versions are NOT compatible
• May require slight trimming of upper radiator hose for clearance
• OEM radiator cap won’t fit—use Koyorad SKC-13 or equivalent