6 Cylinder
6-Cylinder GM Cylinder Heads |
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| Liters | CID | Description | HP | Cyls | Head Casting Numbers | Part Number |
| 3.8L | 229 | 3/8 Inch Temperature Sender Hole. Standard Marine Replacement. | 175 | V-6 | 595, 553 | H6005 |
| 4.1L | 250 | Tapered Seat Plugs. Standard Marine Replacement. | 150 & 165 | L-6 | 763, 052 | H6007 |
| 4.3L | 262 | 3 Accessory Mounting Holes On The Front Of The Head. Substitute For The 2 Accessory Mounting Holes On The Front Of The Head. Press In Studs. | 175 & 205 | V-6 | 768, 996, 107, 476, 103, 066 | H6009 |
| 4.3L | 262 | Screw In Studs. Heart Shaped Combustion Chambers. | 175 & 205 | V-6 | 772, 140 | H6010 |
| 4.3L | 262 | Intake Ports Have Notch In Top Of Intake Port. Screw In Studs. Round Push Rod Holes. | 175 & 205 | V-6 | 181, 209, 064 | H6011 |
| 4.3L | 262 | Intake Ports Have Notch In Top Of Intake Port. Screw In Studs. Round Push Rod Holes. Has Detonation Sensor Hole Above Water Temperature Hole. | 175 & 205 | V-6 | 064, 181, 209 | H6012 |
| 4.3L | 262 | Roller Rocker Arms. No Exhaust Cross Over. Heart Shaped Combustion Chamber. | 175 & 205 | V-6 | 113 | H6014 |