WIHMCCK Accessory Drive for Western Star · Kenworth · Peterbilt
Fits Detroit Diesel Series 60 12.7L Turbo Diesel Engines
Replaces 23523998 · R23523998 · 680371 · 23518253 · 23524280Key Features:
• Cross-Brand Heavy Duty Fitment
• Front Engine Timing Cover Mount
• Engine Gear Driven Design
• 8-Groove Serpentine Belt
• 2-Year Warranty⚠️ FOR DETROIT DIESEL SERIES 60 12.7L ENGINES ONLY
❌ NOT for 14.0L · NOT for 2005+ EGR engines ★ WIHMCCK AUTO PARTS — PREMIUM QUALITY ★
⚡ Cross-Brand Heavy Duty ⚡
ACCESSORY DRIVE ASSEMBLY Western Star · Kenworth · Peterbilt · Detroit S60 12.7L 8-Groove Serpentine · 34-Tooth Helical Gear · Direct Bolt-On
✦ FITS 23523998 · R23523998 · 680371 ✦
🚛
Cross-Brand
3 Truck Brands ⚙️
34-Tooth Gear
Helical Drive Gear 💧
Water Cooled
Valve Plate Design 📦
Complete
O-Ring Included
★ WESTERN STAR · KENWORTH · PETERBILT — CLASS 8 HEAVY DUTY ★
📦 PRODUCT OVERVIEW The WIHMCCK Accessory Drive Assembly is a premium direct OEM replacement for Detroit Diesel Series 60 12.7L (PRE-EGR, 2004 and Older) diesel engines, specifically designed for Western Star, Kenworth, and Peterbilt Class 8 heavy-duty trucks. This front engine accessory drive assembly mounts to the front timing cover and features an 8-groove serpentine belt pulley and a 34-tooth helical drive gear that meshes with the engine timing gear. It drives the alternator, water pump, and other accessory components. The assembly includes an O-ring (DDC 8929253) for a complete, leak-free installation. Replaces OEM 23523998 (Detroit Diesel), R23523998 (Remanufactured), 680371 (Aftermarket), 23518253, and 23524280. ✓ Restores accessory drive system ✓ Cross-brand fitment ✓ Built for the long haul
⚠️ COMMON FAILURE SYMPTOMS — FIXED BY THIS PART • Serpentine belt slipping or squealing from the accessory drive pulley
• Accessory drive gear wear causing timing/accessory noise
• Oil leaking from the front timing cover seal area
• Alternator or water pump not spinning at correct speed
• Belt misalignment or excessive vibration from the front engine area
• Visible gear tooth wear or pitting on the 34-tooth helical gear
✅ VEHICLE FITMENT ⚠️ DETROIT S60 12.7L ONLY
Compatible with Detroit Diesel Series 60 12.7L (PRE-EGR, 2004 & Older) engines in Western Star, Kenworth, and Peterbilt trucks.
❌ NOT compatible with Series 60 14.0L or 2005+ EGR engines.
🚛 Cross-Brand Fitment Make Model Years Engine Western Star49001995-2003Detroit Series 60 12.7L Western Star4964 Heritage1995-2003Detroit Series 60 12.7L KenworthW9001994-2003Detroit Series 60 12.7L KenworthT6001994-2003Detroit Series 60 12.7L KenworthT8001994-2003Detroit Series 60 12.7L Peterbilt3791994-2003Detroit Series 60 12.7L Peterbilt3872000-2003Detroit Series 60 12.7L Peterbilt3851996-2003Detroit Series 60 12.7L
📊 COMPLETE SPECIFICATIONS
Product Type Accessory Drive Gear Box Assembly Condition 100% Brand New Placement on Vehicle Front Engine Timing Cover Drive Type Engine Gear Driven Drive Gear Teeth 34 Tooth Helical Serpentine Belt Grooves 8 Grooves O-Ring Included Yes (DDC 8929253) Items Included 1x Accessory Drive Assembly · O-Ring Package Weight 12 lbs (5.4 kg) Warranty 2-Year Warranty
REPLACES OEM & INTERCHANGE PART NUMBERS 23523998 | R23523998 | 680371 Also replaces: 23518253 · 23524280 · 23523996 · E23523998 · DDC 8929253 ★ WESTERN STAR · KENWORTH · PETERBILT · DETROIT S60 12.7L ★
⚠️ FOR DETROIT SERIES 60 12.7L PRE-EGR ENGINES ONLY
📦 WHAT\'S IN THE BOX ✅ 1 × Accessory Drive Assembly (8-Groove Serpentine · 34-Tooth Helical Gear)
✅ 1 × O-Ring (DDC 8929253)
🚚
FAST US SHIPPING
24H Dispatch · 2-4 Days 🛡️
2-YEAR WARRANTY
Worry-Free 🔄
NO CORE CHARGE
30-Day Returns
🔥 ORDER NOW — KEEP ON TRUCKIN\' 🔥
Fast US Shipping · 2-Year Warranty · No Core Charge
🔧 INSTALLATION NOTE: Professional installation recommended. ⚠️ FOR DETROIT SERIES 60 12.7L PRE-EGR ENGINES ONLY — NOT for 14.0L or 2005+ EGR engines. This is a cross-brand accessory drive assembly for Western Star, Kenworth, and Peterbilt trucks. Verify the drive gear tooth count and serpentine belt groove count match your original assembly. Clean all mating surfaces and replace the O-ring before installation. Torque all bolts to Detroit Diesel specifications. Unsure about compatibility? Send us your engine serial number or VIN before ordering, and our team will verify fitment within 24 hours.
🚛 Aftermarket part · Not OEM · Compatible with Detroit Series 60 12.7L PRE-EGR Engines in Western Star / Kenworth / Peterbilt ONLY
❌ NOT compatible with 14.0L · 2005+ EGR · Other engine platforms
WIHMCCK AUTO PARTS © 2026 | Walnut, California, USA | Built for the Long Haul
