Heads are supplied bare, semi‑complete, or fully assembled (with valves, springs, camshafts & lifters). All units are CNC‑machined, pressure‑tested, and packed for export.
(Casting shape and EGR port differ by market; confirm by VIN/engine code before ordering.)
3 | Vehicle‑Application Matrix
Moteur
Core Models (global production years)
1KD‑FTV 3.0 L
Toyota Hilux (KUN26/36, 2005‑2015) – pickup & Vigo Revo Toyota Fortuner 3.0 D‑4D (2005‑2016) Toyota Land Cruiser Prado 120/150 (TRJ/KDJ120, 150, 2002‑2015) Toyota Hiace / Regius Ace 3.0 D‑4D (2004‑2019) Toyota 4Runner 3.0 D‑4D export trims
2KD‑FTV 2.5 L
Toyota Hilux 2.5 D‑4D (KUN25/35, 2004‑2015) Toyota Innova 2.5 Diesel (TGN40, 2005‑2015) Toyota Fortuner 2.5 D‑4D (selected ASEAN markets) Toyota Hiace / Quantum 2.5 D‑4D (TRH/KDH200, 2004‑2019) Toyota Dyna 150 / ToyoAce 2.5 D‑4D (2001‑2011)
4 | Installation Highlights
Step
Key Points
Preparation
Check deck flatness ≤ 0.05 mm; hot‑pressure‑test water jackets.
Gasket & Bolts
Always use a new MLS head gasket et new TTY head bolts.
Torque Sequence (typ.)
39 N·m → 90° → 90° (cross pattern, centre‑out).
Timing Items
1KD uses a long‑life chain but inspect guides; 2KD belt & tensioner should be renewed.
EGR / Port Match
Ensure correct EGR gallery (EURO 4/5 heads have additional passages).
Post‑start Checks
Bleed cooling system; verify rail pressure & VNT actuator function to avoid over‑boost.
5 | Typical Failure Modes
Symptôme
Cause probable
Coolant loss / overheat
Crack between exhaust seat & coolant jacket or warped head
Hard cold‑start & white smoke
Cracked pre‑combustion bowl or low compression
Oil‑in‑coolant
Internal crack or gasket blow‑by
Power drop & rattling
Valve‑seat recession, cam journal wear, or VNT sticking
6 | Export Hot‑Spots
Asie du Sud-Est – Thailand, Philippines, Indonesia
Afrique – Kenya, Nigeria, South Africa
Moyen-Orient – UAE, Iraq, Saudi Arabia
Amérique du Sud – Chile, Peru, Bolivia
Océanie – Australia, PNG
7 | Common Cylinder Head Failures & Repair Notes
(Applicable to 1KD-FTV / 2KD-FTV 2.5L & 3.0L D-4D Engines)
Failure Mode
Symptoms
Causes
Repair/Prevention
Cracked Cylinder Head
– Coolant loss
White exhaust smoke
Surchauffe du moteur
Pressurized cooling system after cold start – Overheating due to clogged radiator or low coolant
Excessive turbo boost
Thin or degraded casting in early OEM heads – Replace head with reinforced casting (e.g. 11101-30050 / 0L060)
Upgrade to high-quality aftermarket casting
Always replace radiator and thermostat during head job Valve Seat Recession – Ticking noise
Perte de compression
Misfire under load – Poor valve material in early models
Prolonged high-temp operation
Low-lubricity fuel – Resurface seat and install new hardened valve seats
Use better quality diesel fuel
Check valve clearances regularly Oil in Coolant / Sludge in Radiator – Mayonnaise-like sludge
Oil cooler contamination
Internal leak – Head-to-block crack
Failed gasket
Faulty EGR cooler (in EGR-equipped engines) – Pressure test both head & oil cooler
Replace gasket and check block deck flatness
Clean coolant system thoroughly Warped Head / Gasket Blowout – Coolant leak externally
Compression leak to coolant
Overheating under load – Over-torqued head bolts
Running with low coolant
Poor-quality head gasket – Machine head flatness (tolerance: ≤ 0.05 mm)
Replace bolts (TTY bolts must not be reused)
Use correct torque & angle method Camshaft Journal Wear / Cam Snap – Loud ticking or knocking
No start
Uneven valve timing – Poor oil pressure
Lack of oil changes
Long idling with poor lubrication – Replace head or reline cam journals (if serviceable)
Clean oil system thoroughly
Always use correct 5W-30/15W-40 oil grade
Additional Tips
1KD early models (pre-2007) are known for head cracking issues due to thin castings — upgraded OEM versions like 11101-0L060 ou reinforced aftermarket heads are strongly recommended.
Toujours utiliser new TTY head bolts et MLS gaskets rated for turbo-diesel compression.
EGR-equipped engines (especially Euro 4+) are more likely to overheat due to carbon buildup — regular intake cleaning helps prevent head damage.
After repair, perform CO2 coolant test et system pressure hold before engine restart.