Cylinder Heads

8640062J00 - : Headrest for Infiniti Image

Headrest

Infiniti 8640062J00
Without folding back, cloth.
Discontinued
864006P604 - : Headrest for Infiniti Image

Headrest

Infiniti 864006P604
Passenger side, from 1/97 usa only. without 10th anniversary cocoa. Driver side, to 1/97 usa only. cocoa. Passenger side, to 1/97, usa...
Discontinued
864003H613 - : Headrest for Infiniti Image

Headrest

Infiniti 864003H613
Driver side from 1/97 usa only. with 10th anniversary beige. Passenger side, from 1/97, usa only, with 10th anniversary, beige.
Discontinued
864007W210 - : Headrest for Infiniti Image

Headrest

Infiniti 864007W210
Sedan, power seat, 2005-06, beige.
Discontinued
864006J968 - : Headrest for Infiniti Image

Headrest

Infiniti 864006J968
Driver seat. Passenger seat.
Discontinued
864007W214 - : Headrest for Infiniti Image

Headrest

Infiniti 864007W214
Sedan, power seat, 2005-06, gray.
Discontinued
248201W300 - : Speedometer Gauge for Infiniti Image

Speedometer Gauge

Infiniti 248201W300
1997-00. QX4.
Discontinued
86450AM400 - : Headrest for Infiniti Image

Headrest

Infiniti 86450AM400
Coupe, driver side 2003-05, with leather seat, gray.
Discontinued
86400AM400 - : Headrest for Infiniti Image

Headrest

Infiniti 86400AM400
Coupe, passenger side 2003-05, with leather seat, gray. Coupe, driver side 2003-05, with leather seat, gray.
Discontinued
260103Y489 - : Composite Assembly for Infiniti Image

Composite Assembly

Infiniti 260103Y489
I30. Right. With hid headlamps. Without touring pkg.. From 1/00.
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.