Nov 25th COVID-19 UPDATE: We are open for business!

Walk-ins are not allowed but orders may be placed online and picked up at our warehouse.

We are shipping orders as fast as we can with a limited staff.
Some shipments will be delayed regardless of status shown on the website.
Mercury factory backorders are common (getting better) right now and we have no guarantee of release dates.

UPS has suspended service guarantees and delays are common (getting better!) and beyond our control.
We are sorry to say there are no refunds for late shipments at this time.

LUCKILY we have been stocking parts for over 40 years and have an enormous selection of parts that ship the same day!

Please email us with any questions!

Thank you for your patience and stay healthy!

Popular tags

View all

Cylinder Heads

Mercury Marine and Quicksilver Cylinder Heads

Quicksilver now offers iron cylinder heads with exclusive Black-X Composit Valve Technology. Quicksilver has been the global standard for durable marine parts.

Install with confidence, as these new cylinder heads come with a standard 1 year limited factory warranty from Mercury Marine. NOTE: there may be a core deposit required from the factory and will be added to your cart.

CYL HEAD PN	APPLICATION	YEAR	VALVE
938-8M0115134	2.5L	1963-1989	BLACK X COMPOSITE
938-8M0115134	3.0L	1968-1994	BLACK X COMPOSITE
938-8M0115135	3.0LX	1990-1997	BLACK X COMPOSITE
938-8M0115135	3.0L	1998+	BLACK X COMPOSITE
938-8M0115136	4.3L	2000-2015	BLACK X COMPOSITE
938-8M0115137	5.7L & 383 MPI	1996+	BLACK X COMPOSITE
938-8M0115137	6.2L	1999-2009	BLACK X COMPOSITE
938-8M0115138	357 MAG 4V	2008+	BLACK X COMPOSITE
938-8M0115139	383 MAG 4V	2010+	BLACK X COMPOSITE
938-8M0115140	385 PT	2016+	PERFORMANCE TUNE
938-8M0115141	454/502 HO GEN V & VI	1992-2000	BLACK X COMPOSITE
900-8M0090760	8.1L STBD/RIGHT	2000+	BLACK X COMPOSITE
900-8M0091709	8.1L PORT/LEFT	2000+	BLACK X COMPOSITE
938-8M0115142	540 MAG 2.19" INTAKE	2014+	MANLEY SEVERE DUTY
938-8M0115143	500/500EFI/540 2.25"	1992+	MANLEY SEVERE DUTY

Display per page

Sorry, not found

Mercury Quicksilver 938-8M0115134 2.5L/3.0L Cylinder Head Assembly

938-8M0115134 Cylinder Head Assembly 2.5L/3.0L
This is a genuine Mercury Marine factory OEM part, not aftermarket
Please check our current stock level and order below or use the Contact Us form at the bottom of the page for any questions

$762.50 $719.81

Mercury Quicksilver 938-8M0115136 4.3L V6 Complete Cylinder Head

938-8M0115136 4.3L Cylinder Head Complete
This is a genuine Mercury Marine factory OEM part, not aftermarket
Please check our current stock level and order below or use the Contact Us form at the bottom of the page for any questions

$568.75 $536.91

Mercury Quicksilver 938-8M0115138 357 Cylinder Head Assembly

938-8M0115138 Cylinder Head Assembly 357
This is a genuine Mercury Marine factory OEM part, not aftermarket
Please check our current stock level and order below or use the Contact Us form at the bottom of the page for any questions

$668.75 $631.31

Mercury Quicksilver 938-8M0115143 540 Cylinder Head Assembly

938-8M0115143 540 Hi Performance Cylinder Head Assy
This is a genuine Mercury Marine factory OEM part, not aftermarket
Please check our current stock level and order below or use the Contact Us form at the bottom of the page for any questions

$2,043.75 $1,900.69

Mercury-Mercruiser 900-8M0091709 CYLINDER HEAD ASSEMBLY

900-8M0091709 CYLINDER HEAD ASSEMBLY
This is a genuine Mercury Marine factory OEM part, not aftermarket
Please check our current stock level and order below or use the Contact Us form at the bottom of the page for any questions

$1,656.25 $1,540.32

Mercury-Mercruiser 938-845704T5 Replaced by 8M0115143

938-845704T5 Replaced by 8M0115143 has been superceded to a new part number.
The newest part number is 8M0115143 -click here- to see the newest superceded part
Please note the new superceded part is a functional replacement and may look differant from the original part

$0.00