Cylinder Heads

864507W214 - : Headrest for Infiniti Image

Headrest

Infiniti 864507W214
Sedan, driver side, power seat, gray.
Discontinued
26025JK61C - : Lens & Housing for Infiniti Image

Lens & Housing

Infiniti 26025JK61C
With auto control.
Discontinued
260751LA5B - : Lens & Housing for Infiniti Image

Lens & Housing

Infiniti 260751LA5B
With auto leveling.
Discontinued
260291MA0A - : Socket Cover for Infiniti Image

Socket Cover

Infiniti 260291MA0A
Outer.
Discontinued
26075AS510 - : Lens & Housing for Infiniti Image

Lens & Housing

Infiniti 26075AS510
Without sport package.
Discontinued
26040AC700 - : Headlight Bracket for Infiniti Image

Headlight Bracket

Infiniti 26040AC700
Xenon type, 2005-06, upper.
Discontinued
260251CE0C - : Lens & Housing for Infiniti Image

Lens & Housing

Infiniti 260251CE0C
With adaptive headlamps, FX35.
Discontinued
291A01MG9C - : Drive Motor Inverter for Infiniti Image

Drive Motor Inverter

Infiniti 291A01MG9C
Inverter & components. Q70 Hybrid.
Discontinued
260751CF0D - : Lens & Housing for Infiniti Image

Lens & Housing

Infiniti 260751CF0D
With adaptive headlamps, FX50.
Discontinued
758623JV0A - : Battery Hold Down Frame for Infiniti Image

Battery Hold Down Frame

Infiniti 758623JV0A
Conventional, 2.5L.
Discontinued
26010AS525 - : Headlight Assembly for Infiniti Image

Headlight Assembly

Infiniti 26010AS525
Without sport package.
Discontinued

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Maintain Your INFINITI's Engine Performance with Quality Cylinder Heads

Don't compromise with unreliable alternatives when genuine components are within reach. That's where Coulter INFINITI excels. Cylinder heads sit atop your engine block and contain combustion chambers where fuel ignites. These precision-machined components manage airflow and seal combustion pressure. Healthy cylinder heads are essential for power output and fuel economy.

Cylinder Head Operation

Cylinder heads house valves, springs, and camshafts that control air and fuel mixture entering each cylinder. They also route exhaust gases out through ports. The head gasket seals the interface between heads and block, containing combustion pressure. Coolant passages within heads regulate temperature. Models like the Q50 and Q60 feature advanced cylinder heads with variable valve timing systems.

Causes of Cylinder Head Damage

Overheating warps cylinder heads, causing coolant leaks and compression loss. Carbon deposits accumulate on valves and combustion chambers, reducing efficiency. Timing chain or belt failures allow valves to contact pistons, bending valves and cracking heads. Poor maintenance leads to sludge buildup that blocks oil passages. Generic replacement heads lack the precise specifications your INFINITI requires. Genuine heads maintain factory tolerances and include updated engineering improvements.

Replacement Indicators

Replace cylinder heads when compression tests reveal significant pressure loss. External coolant leaks from the head gasket area indicate warpage. Excessive oil consumption or white exhaust smoke suggests internal damage. Your vehicle also depends on quality timing belts to protect cylinder heads from catastrophic damage. Mechanics can perform specialized tests to determine if repairs or replacement make better economic sense.

Get back on the road quickly with genuine components from Coulter INFINITI.