5VZ 3.4L Timing Belt 4Runner Tacoma Tundra T-100 13568-YZZ03

Product Overview

Genuine Toyota OEM timing belt for 5VZ-FE 3.4L V6 DOHC engines with factory timing alignment marks. This critical engine component synchronizes crankshaft and camshaft rotation for optimal valve timing and engine performance. This factory-engineered timing belt ensures precise fitment and reliable operation for the complete 90,000-mile service interval on your 3.4L V6 engine.

OEM Part Number(s):

• 13568-YZZ03 (current)
  • 13568-69095 (superseded)
  • 13568-62050 (superseded)

 

Key Features & Benefits

• Genuine Toyota Quality: Factory OEM timing belt manufactured to exact Toyota specifications by Mitsuboshi
• Timing Alignment Marks: Includes factory-molded timing marks for precise camshaft and crankshaft alignment
• 191-Tooth Design: Precision-engineered tooth profile ensures accurate timing throughout service life
• Non-Interference Engine: 5VZ-FE design prevents valve-to-piston contact if the belt fails
• Maintenance Sticker Included: Track installation date and mileage for proper service intervals

 

Technical Specifications

Part Type: Engine Timing Belt
Engine Compatibility: 5VZ-FE 3.4L V6 DOHC 24-valve
Belt Width: 36mm (1.42 inches)
Tooth Count: 191 teeth
Belt Material: High-strength reinforced rubber compound
Tooth Profile: Curvilinear (for reduced noise and wear)
Alignment Marks: Molded timing marks for cam and crank synchronization
Service Interval: 90,000 miles or 72 months (1998+ models)

Fitment

Year Range	Toyota Model	Engine
1996-2002	4Runner	3.4L V6 5VZ-FE
1995-2004	Tacoma	3.4L V6 5VZ-FE
1994-1998	T100	3.4L V6 5VZ-FE
2000-2004	Tundra	3.4L V6 5VZ-FE
1996-2002	Land Cruiser Prado (select markets)	3.4L V6 5VZ-FE
1995-2002	Hilux Surf (select markets)	3.4L V6 5VZ-FE

Important: Replace the timing belt every 90,000 miles or 72 months on 1998+ models. For 1995-1997 models under severe service conditions (excessive idling or low-speed driving), replace at 60,000-mile intervals. Always verify your vehicle's VIN and engine code before ordering.

Installation & Maintenance

Installation Difficulty: Intermediate-Advanced
Tools Required: Complete timing belt tool set, torque wrench, crankshaft pulley removal tool, timing belt tension gauge
Professional Installation: Highly Recommended - requires precise timing alignment and specialized procedures

Maintenance Tips:

• Replace timing belt at 90,000 miles or 72 months per Toyota maintenance schedule (1998+ models)
• Always replace the water pump, tensioners, and idlers during timing belt service
• Use factory timing marks on the belt to align the camshaft and crankshaft sprockets precisely
• Rotate engine two complete revolutions after installation to verify timing alignment

 

Frequently Asked Questions

Q: Is the 5VZ-FE an interference or non-interference engine?
A: The 5VZ-FE 3.4L V6 is a non-interference engine, meaning the valves and pistons will not make contact if the timing belt fails. However, belt failure will leave you stranded and should be prevented through proper maintenance.

Q: What's the replacement interval for the 5VZ-FE timing belt?
A: For 1998 and later models, Toyota recommends replacement every 90,000 miles or 72 months. For 1995-1997 models under severe service (excessive idling or low-speed driving), replace at 60,000-mile intervals.

Q: Does this belt include timing alignment marks?
A: Yes, genuine Toyota timing belts include factory-molded timing marks to align with camshaft and crankshaft sprocket marks, making precise timing installation easier and more accurate than unmarked aftermarket belts.

Q: What's the difference between 13568-YZZ03 and 13568-69095?
A: 13568-YZZ03 is the current part number that supersedes 13568-69095. Both are functionally identical timing belts with the exact specifications; Toyota updated the part number as a running change.

Related Toyota Parts You May Need

• Water Pump Assembly (16100-69398-83) - Always replace during timing belt service
• Hydraulic Tensioner (13540-62021) - Critical for proper belt tension
• Idler Bearing (13505-62070) - Replace every timing belt service
• Tensioner Bearing (13503-62040) - Replace every timing belt service
• Front Camshaft Seals (90311-38051) - Prevent oil leaks at camshaft timing sprockets
• Front Crankshaft Seal (90311-40022) - Prevent oil leaks at crankshaft timing sprocket

 

Common Symptoms of Timing Belt Wear or Failure

• Visible cracking, glazing, or fraying on the belt surface or edges
• Engine fails to start or cranks but won't fire (complete belt failure)
• Ticking or slapping noise from the timing cover area during operation
• Rough idle, misfiring, or poor engine performance from timing slip
• Oil contamination on the timing belt from leaking camshaft or crankshaft seals

 

Why Replace Your Timing Belt with a Genuine Toyota OEM?

Critical Engine Synchronization Component: The timing belt is the single most crucial component for proper engine operation, synchronizing the rotation of the crankshaft and camshafts to ensure valves open and close at precisely the right moments in the combustion cycle. Even minor timing variations can cause poor performance, reduced fuel economy, and potential engine damage.

Toyota's 13568-YZZ03 timing belt is manufactured by Mitsuboshi, the original equipment supplier, to exact factory specifications. The precision-molded 191-tooth profile ensures accurate timing throughout the entire service interval, while the reinforced rubber compound resists stretching, cracking, and degradation from heat and oil exposure.

The factory timing alignment marks molded into genuine Toyota belts provide a critical advantage during installation. These marks align precisely with camshaft and crankshaft sprocket indicators, virtually eliminating the possibility of timing errors that can occur with unmarked aftermarket belts. Professional technicians universally prefer genuine Toyota belts for this feature alone.

While the 5VZ-FE is a non-interference engine (meaning valve-to-piston contact won't occur during belt failure), a broken timing belt will still leave you stranded and potentially cause secondary damage to other components. The peace of mind from genuine Toyota quality and the included maintenance reminder sticker make this belt the professional choice for 5VZ-FE timing service.

Toyota's recommended 90,000-mile/72-month replacement interval (for 1998+ models) is based on extensive engineering testing and real-world durability data. Following this schedule with genuine OEM belts ensures your 3.4L V6 will deliver the legendary reliability Toyota is known for.

Invest in genuine Toyota OEM quality for your timing belt replacement and maintain the precise valve timing that makes the 5VZ-FE one of Toyota's most respected engines.