Toyota 1KZ-TE Diesel Solid Single Mass Flywheel (SMF) & Clutch Package w/ Main Rear Seal

Ships in 3-4 weeks from the date of purchase. An estimated ship date is provided within 24 hours (M-F) of purchase. 

Product Overview

Complete professional-grade single mass flywheel conversion bundle for 1993-2005 Toyota 1KZ-TE turbo diesel engines. This comprehensive package combines a premium clutch kit, a performance-matched single-mass flywheel, and an essential rear main seal for a complete clutch system overhaul. This all-inclusive conversion eliminates the problematic factory dual-mass flywheel system while providing superior durability, improved power transfer, and significantly reduced long-term maintenance costs. Save time and money with this professionally curated bundle that includes everything needed for a successful conversion.

Bundle Includes:

• Premium Single Mass Flywheel Clutch Kit (choice of Standard/OEM or Heavy Duty performance)
• CI Premium Solid Mass Flywheel - precision-engineered replacement for dual-mass design
• OEM Toyota Rear Main Seal (90311-95008) - essential replacement during flywheel service

Choose Your Performance Level

Standard/OEM Configuration (320 ft-lbs rated capacity):

• 260mm clutch diameter (OEM specification)
• Organic friction material for smooth daily driving
• Rated: 434 Nm (320 ft-lbs) / Peak: 515 Nm (380 ft-lbs)
• Ideal for stock engines, daily driving, light towing
• Stock tire size or up to 33" tires

Heavy Duty Configuration (419 ft-lbs rated capacity):

• 275mm upgraded clutch diameter (15mm larger than OEM)
• Dual friction Aramid/organic clutch plate with bulletproof-grade material
• Rated: 568 Nm (419 ft-lbs) / Peak: 710 Nm (524 ft-lbs)
• Patented ER2 grooved pressure plate for 60% increased torque capacity
• Spheroidal graphite casting - 300% stronger than standard
• Perfect for modified engines (180+ HP), heavy towing, 35"+ tires

Fitment

Important: This complete conversion bundle is designed specifically for vehicles originally equipped with dual-mass flywheels. The original ring gear from your dual mass flywheel must be removed and transferred to the new solid flywheel during installation. Professional installation, including proper flywheel resurfacing, ring gear press-fitting, and rear main seal replacement, is mandatory for reliable operation.

Common Symptoms Indicating Need for Flywheel Conversion

• Unusual rattling or vibration from the clutch area, especially during engagement
• Difficulty shifting gears or grinding during shifts
• The clutch pedal feel is becoming inconsistent or spongy
• Vehicle has 80,000-120,000+ miles (typical dual-mass flywheel failure range)
• Oil leaking from the rear of the engine (rear main seal failure)
• Clutch slipping under load during towing or acceleration

Why Choose This Complete Conversion Bundle

Toyota's 1KZ-TE turbo diesel is renowned for exceptional reliability and longevity, but the dual-mass flywheel remains its Achilles heel. These complex dual-mass designs were intended to reduce vibration and provide smoother operation, but they introduce a significant failure point that typically manifests between 80,000 and 120,000 miles. When dual-mass flywheels fail, they often cause catastrophic damage to the clutch system and can even damage the transmission bell housing.

This complete conversion bundle represents the definitive solution to the dual-mass flywheel problem. By combining our premium clutch kit, CI Premium solid-mass flywheel, and essential rear main seal into one comprehensive package, you get everything needed for a professional conversion at significant savings over purchasing components separately.

The CI Premium solid mass flywheel at the heart of this bundle represents over 60 years of Australian clutch engineering expertise. Australia's demanding conditions - extreme heat, heavy towing, and rough terrain - have made Australian clutch manufacturers world leaders in durability engineering. This flywheel design mirrors the factory specification used on UK-market Toyota 4Runner models, which came standard with solid flywheels and have proven their reliability over decades of service.

Many mechanics and DIY enthusiasts overlook the rear main seal during flywheel conversions, only to discover an oil leak weeks or months later. Since the rear main seal sits directly behind the flywheel and requires complete transmission removal to access, replacing it during your flywheel conversion is essential preventive maintenance. The 90311-95008 OEM Toyota rear main seal included in this bundle uses premium fluoroelastomer (Viton) rubber, providing superior heat resistance and long-term sealing performance in the harsh environment behind the flywheel.

Understanding the Performance Options: We offer this bundle in two performance configurations to match your specific application. The Standard/OEM configuration provides reliable OEM-replacement performance for stock engines and daily driving applications. The Heavy Duty configuration incorporates 4Terrain Ultimate technology with patented ER2 grooved pressure plate design, dual-friction Aramid clutch material, and spheroidal graphite casting that's 300% stronger than conventional designs. This Heavy Duty variant delivers 60% more torque capacity while maintaining surprisingly good pedal feel through intelligent engineering rather than excessive clamping force.

The solid mass flywheel design eliminates the internal springs and friction surfaces that inevitably fail in dual-mass designs. The single-piece steel construction provides superior heat dissipation during towing, off-road driving, and extended highway use - critical factors for 1KZ-TE owners who use their vehicles for serious work. Unlike dual-mass flywheels, which cannot be resurfaced and must be replaced as complete assemblies, solid flywheels can be resurfaced during future clutch replacements, significantly reducing long-term maintenance costs.