Toyota Quick Delivery Engine ReplacementReconditioned & Used Prices Compared

Toyota Quick Delivery rebuilt engines typically cost £1,200-£4,500 supply-only, depending on engine code and condition. The 4B and N04C command premium pricing due to limited availability and Yamato Transport exclusivity.

• 5L and 3B engines: £1,200-£2,600 rebuilt supply-only
• 4B Yamato exclusive: £1,400-£3,200 rebuilt supply-only
• N04C common rail turbo: £2,200-£4,500 rebuilt supply-only
• Supply & fit adds £400-£900 depending on location

The 4B 3.7L diesel head gasket failure is the most frequently reported issue, typically occurring between 120,000-180,000 miles on Yamato Transport vehicles and driving urgent replacement searches.

• 4B head gasket failure causes coolant loss and overheating
• 5L timing belt failure destroys the interference engine
• N04C common rail HPFP failure contaminates the fuel system
• All three issues often make replacement more economical than repair

Quick Delivery diesel engines are robust when maintained, but age-related failures like head gaskets and timing belts are expected on high-mileage commercial vehicles used for revenue-generating delivery work.

• 5L and 3B benefit from simple, repairable design
• 4B and N04C require specialist knowledge for complex repairs
• Regular coolant and timing belt service prevents catastrophic failure
• Rebuilt units with upgraded components offer improved longevity

Engines are not interchangeable across QD generations; QD100 (1982-1986), QD200 (1986-2000) and third generation (1999-2016) use incompatible engine families and mounting points.

• QD100 uses B/5L; QD200 uses 3B/4B; third gen uses 4B/N04C
• ECU, wiring loom and transmission compatibility must be verified
• Yamato exclusive variants may have unique mounting brackets
• Always match engine code to chassis generation for direct fit

Supply-only engines can be dispatched within 1-3 working days; supply & fit services typically complete the job in 1-2 days depending on specialist workload and vehicle accessibility.

• Used engines may have longer lead times due to sourcing
• Rebuilt units are often held in stock for common codes like 4B
• Mobile fitting available for fleet operators at depot locations
• Post-installation ECU coding and road test included in fitment

All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty covering parts and labour, with extended terms available for commercial fleet applications.

• Warranty covers manufacturing defects and premature failure
• Commercial use warranty terms confirmed with chosen supplier
• Keep service records to maintain warranty validity
• Warranty transferable if vehicle is sold within coverage period

EngineMarket connects you with vetted UK specialists holding rebuilt, reconditioned and used Toyota Quick Delivery engines, with nationwide delivery and supply & fit options.

• Specialists hold stock of common codes: 5L, 3B, 4B, N04C
• Yamato exclusive variants may require advance ordering
• Compare prices, warranty terms and lead times side-by-side
• All suppliers rated and reviewed by commercial vehicle owners

For high-mileage commercial vehicles, replacement is often more cost-effective than machining warped heads or rebuilding complex common rail systems, especially when downtime impacts revenue.

• 4B head gasket repair: £1,200-£1,900 vs rebuilt engine £1,400-£3,200
• N04C HPFP repair risks injector contamination and repeat failure
• Rebuilt engines include upgraded components addressing known weaknesses
• Minimise downtime with supply & fit services for fleet operators

Yes, the 3RZ-FP LPG system requires technicians trained in gas fuel systems for injector calibration, vaporiser maintenance and ECU mapping specific to LPG operation.

• LPG injectors clog more readily than diesel equivalents
• Vaporiser diaphragms fatigue in cold urban delivery cycles
• Always use suppliers experienced with Toyota LPG conversions
• Rebuilt LPG engines include fresh fuel system components

Enter your registration above for instant DVLA verification, or locate the engine code stamped on the block near the injection pump (5L, 3B, 4B, N04C) or on the vehicle identification plate.

• Engine code is critical for ordering compatible replacement units
• Yamato Transport vehicles may have fleet-specific code suffixes
• Photograph the stamping when removing the old engine for reference
• Our specialists can confirm compatibility before dispatch