✅ Compatibility

• Make: Subaru
• Engine: 2.5L H4 Boxer (EJ25 horizontal-4 naturally aspirated)
• Transmission: Manual (Standard) only — NOT compatible with automatic transmission variants
• OEM / Cross Reference Part Numbers:
  • Subaru OEM: 23300AA48A
  • Denso: 280-0365, 428000-2300
  • Lester: 17956
  • Remy Light Duty: 17474, SR107630
  • Wilson: 91-29-5682
• Compatible Subaru Vehicles:
  • Subaru Impreza Outback — 2.5L H4 — 2004–2005 — Manual transmission
  • Subaru Legacy — 2.5L H4 — 2005–2007 — Manual (Standard) transmission
  • Subaru Outback — 2.5L H4 — 2005–2007 — Manual (Standard) transmission
• ⚠️ CRITICAL — Manual Transmission Only: This starter is specifically for manual transmission variants of the Subaru Legacy and Outback 2.5L H4. Automatic transmission models use a different starter. Verify your VIN, build sheet, or door jamb label to confirm manual transmission before ordering.

🔧 Product Highlights

• Direct OEM Replacement — Denso PMGR 12V 9T CCW Starter for Subaru 2.5L H4 Boxer Manual Transmission: Drop-in fit for Subaru Impreza Outback (2004–2005), Legacy (2005–2007), and Outback (2005–2007) with 2.5L H4 EJ25 boxer engine and manual transmission — matching original Denso PMGR starter specifications including 12V, 9-tooth gear, counterclockwise (CCW) rotation, 1kW output, 233.6mm length, and 3.4kg weight
• 7 OEM Cross-Reference Numbers — Subaru / Denso / Lester / Remy / Wilson: Cross-references Subaru OEM 23300AA48A, Denso 280-0365 / 428000-2300, Lester 17956, Remy 17474 / SR107630, and Wilson 91-29-5682 — confirming fitment across Subaru dealer, OEM replacement, and aftermarket parts channels
• Denso PMGR — Subaru’s OEM Starter Technology for Maximum Reliability in a Compact Lightweight Package: This starter uses Denso’s Permanent Magnet Gear Reduction (PMGR) design — the same technology Subaru chose as OEM equipment. PMGR starters deliver higher cranking torque at lower current draw compared to conventional direct drive starters, providing faster and more reliable engine cranking for Subaru’s horizontally-opposed EJ25 boxer engine
• Subaru EJ25 2.5L H4 Boxer — CCW Rotation Required by Subaru’s Unique Horizontally-Opposed Engine Layout: Subaru’s horizontally-opposed (boxer) engine layout requires a counterclockwise (CCW) rotating starter — the opposite direction to most conventional inline and V-configuration engines. This CCW PMGR starter is purpose-built for Subaru’s EJ25 2.5L boxer engine, ensuring correct engagement geometry and rotation direction for the Subaru ring gear
• Subaru Legacy and Outback — Subaru’s Most Popular All-Wheel-Drive Family Cars with a Large and Loyal Owner Community: The Subaru Legacy and Outback (2005–2007) are among Subaru’s most popular and widely owned vehicles — with a large and loyal owner base across North America, Australia, and Europe who favour DIY maintenance and quality aftermarket parts. The Legacy and Outback’s all-wheel-drive capability and long-term reliability make them favourites for high-mileage ownership
• Starter Motor Failure on Subaru Legacy / Outback — Common on High-Mileage 2005–2007 Vehicles: Starter motor wear is a common maintenance issue on high-mileage Subaru Legacy and Outback vehicles from the 2005–2007 era — typically presenting as slow cranking, intermittent no-start, or a grinding noise on engagement. Replacing the OEM Denso starter with a quality aftermarket PMGR unit restores reliable starting and is a straightforward DIY or workshop replacement

📦 What's Included

• 1× Starter Motor 12V 9T PMGR — New Aftermarket (Subaru 23300AA48A / Denso 280-0365)

🔑 Key Specs

• Subaru OEM Part Number: 23300AA48A
• Denso Part Numbers: 280-0365 / 428000-2300
• Other References: Lester 17956 — Remy 17474 / SR107630 — Wilson 91-29-5682
• Voltage: 12V
• Power: 1kW (1.34HP)
• Drive Gear Teeth: 9T (9-tooth)
• Rotation: CCW (counterclockwise) — Subaru boxer engine requirement
• Starter Type: PMGR (Permanent Magnet Gear Reduction)
• Length: 233.6mm (9.197 in)
• Weight: 3.4 kg (7.47 lbs)
• Transmission: Manual (Standard) ONLY
• Compatible: Subaru Impreza Outback 2004–2005 / Legacy 2005–2007 / Outback 2005–2007 — 2.5L H4 Boxer — Manual transmission
• Condition: New Aftermarket
• SKU: 280-0365

⚠️ IMPORTANT: This starter is for manual transmission only. Automatic transmission Subaru Legacy and Outback models require a different starter. Verify your transmission type via VIN, door jamb sticker, or build sheet before purchasing. Contact us if unsure — we are happy to confirm fitment for your Subaru Legacy, Outback, or Impreza Outback.