See full version: Mercury marine cylinder head casting numbers
Ford’s part number convention generally follows the format of a four-digit casting code, followed by a four-digit basic part number, which will be “6090” for a cylinder head, followed by the revision version. Since it’s fairly obvious that you’re looking at a cylinder head, the important digits are the first four and last two, and in most cylinder heads those four to six digits are all that are cast into the head, anyway.
FE medium block: Derived from the “Ford-Edsel” name, the FE is bigger than a small-block, but smaller than a big-block, earning it the moniker of a “medium-block.” It was designed to be a replacement for the Y-Block in the 1958 Ford line. It persevered until 1978, and came from the factory in displacements ranging from 332 cubic inches up to 428 cubic inches. here
Here’s where you would find the casting number on a Windsor head. Here we have the venerable E7TE-PA 5.0L head. One thing to note, is that due to the general numbering scheme of Ford’s casting numbers, you can have the same major casting number, for two completely different applications. For example, there is also an E7TE big-block Ford cylinder head, with the revision identifier of “BD.” more
1. Model Number and Serial Number
These numbers are located on the transom bracket of the motor. more
In order to provide you with the correct powerhead, the following information is required:
3 CYL of L# Powerheads: Please provide the cast number for 70, 75, 80, and 90 HP powerheads built between 1987 and 2002. This number is located on the starboard side of the block next to the number 3 CYL. Example: 877 - 8946 - C7 here
2. Engine Cast Number
Both Mercury Remanufacturing Cylinder heads and Quicksilver Remanufacturing Cylinder heads start with the best available "marine" cylinder head cores. Mercury & Quicksilver Remanufacturing refurbish MerCruiser engines and components to current specifications. Each cylinder head is completely disassembled and then precision machined at Mercury's state of the art facility for proper gasket sealing and concentric stem-to-guide clearances. more
Install with confidence, as these heads come with a standard 1 year limited factory warranty from Mercury Remanufacturing. NOTE: there may be a core deposit required from the factory and will be added to your cart.
GM 4 Cylinder 181 cid (3.0L) with Full Circle Rear Seal
The model of Mercruiser 3.0L 4 Cylinder Engine can be determined by looking at the last letters of the engine code which is stamped in all complete Marine Longblocks by General Motors at the time of assembly. If the serial number and/or model decals are missing the marine engine code will help to determine the engine model. Refer to the drawing for engine code location.
Sterndrive Models (LH rotation), flat lifters, 3.0L cyl. Head [links]
GM 4 Cylinder 181 cid (3.0L) with 2–piece Rear Seal [links]
Information you need from the engine code, example M01187MH. 7=General Motor’s model year in this case 1997, BUT this could also be 1987 or 1977. MH = Type of engine. The 350 cid V8 Mercruiser models 5.7L, 350 Mag Mpi, Black Scorpion Ski, etc.
GM 4 Cylinder 153 cid (2.5L)
Remanufactured outboard powerhead, Electronic Fuel Injection technology utizing an electric oil pump. [links]
Remanufactured outboard powerhead, Electronic Fuel Injection technology. more
Remanufactured outboard powerhead (Carbureted technology).
Fits the Mercury/Mariner V‑225 Optimax DFI (3.0L) outboard, 0T09167‑0T178499, with a head casting number.
Remanufactured outboard powerhead, Direct Fuel Injection technology utilizing head castings with NO cast number. [links]