| OMC Pistons 5 HP - 48 HP | |||||||
| *All
pistons are sold with wrist pins, rings, and clips (unless
noted).
**All piston kits include one piston only. |
|||||||
|
Wiseco pistons are a forged piston. |
|||||||
| A PRO Piston is made of the highest quality alloys. Pro Pistons are made from high silicon aluminum alloy and meets or exceeds oem specifications. The Pro pistons are our most economical piston line. | |||||||
| The Pro-V Piston is made of the same alloys as the pro piston adding a gray moly coating. Moly reduces friction during the critical break-in period and helps dissipate heat as well. | |||||||
| Model | Cyl. | Piston Size | Bore Size | Pro-V Cast | House Brand |
 |
|
| 5 / 6 / 8 HP 1986-95 | 2 | STD | 2.188 | - | - | 18-4069 (Pro) | |
| 9.9-15 1993-2004 | 2 | STD | 2.375 | 3181PS | - | - | |
| - | - | 8100P | |||||
| 010 | 2.385 | 3181P1 | - | - | |||
| - | - | N/A | . | ||||
| 020 | 2.395 | 3181P2 | - | - | |||
| - | - | 8120P | |||||
| 030 | 2.405 | 3181P3 | - | - | |||
| - | - | 8130P | |||||
| 040 | 2.415 | 3181P4 | - | - | |||
| - | - | 8140P | |||||
| 9.9-15
1974-80 9.9-15 1981-93 *Must use Wrist Pin Bearing WP14,
81-93 use WP36. click below and follow to wrist pin
Bearings.
|
2 | STD | 2.188 | 3136PS | *Must use wrist pin bearing WP14, 81-93 use WP36 | - | |
| - | *Must use Wrist Pin Bearing WP14, 81-93 use WP36 | 5400 (Pro) | |||||
| 010 | 2.198 | 3136P1 | *Must use wrist pin bearing WP14, 81-93 use WP36 | - | |||
| 020 | 2.208 | 3136P2 | *Must use wrist pin bearing WP14, 81-93 use WP36 | - | |||
| - | *Must use wrist pin Bearing WP14, 81-93 use WP36 | 5420 (Pro) | |||||
| 030 | 2.218 | 3136P3 | *Must use wrist pin bearing WP14, 81-93 use WP36 | - | |||
| - | *Must use wrist pin Bearing WP14, 81-93 use WP36 | 5430 (Pro) | |||||
| 040 | 2.228 | 3136P4 | *Must use wrist pin bearing WP14, 81-93 use WP36 | - | |||
| 18JET 1995-99, 20HP 1981-83, 20HP 1986-95, 20HP 1997, | 2 | STD | 3.000 | 3127PS | - | ||
| - | - | 5500 (Pro) | |||||
| 020 | 3.020 | 3127P2 | - | - | |||
| - | - | 5520 (Pro) | |||||
| 030 | 3.030 | 3127P3 | - | - | |||
| - | - | 5530 (Pro) | |||||
| 040 | 3.040 | 3127P4 | - | - | |||
| 25HP 1977-80 | 2 | STD | 3.000 | 3128PS | - | - | |
| 020 | 3.020 | 3128P2 | - | - | |||
| 030 | 3.030 | 3128P3 | - | - | |||
| 040 | 3.040 | 3128P4 | - | - | |||
| 25HP 1981-99, 28HP 86-89, | 2 | STD | 3.000 | 3127PS | - | - | |
| - | - | 5500 (Pro) | |||||
| 020 | 3.020 | 3127P2 | - | - | |||
| - | - | 5520 (Pro) | |||||
| 030 | 3.030 | 3127P3 | - | - | |||
| - | - | 5530 (Pro) | |||||
| 040 | 3.040 | 3127P4 | - | - | |||
| 28Jet
1995-99
25-35HP 1996- UP |
2 | STD | 3.187 | 3111PS | - | - | |
| - | 1100V (Pro-V) | - | |||||
| - | - | 1100 (Pro) | |||||
| 020 | 3.207 | 3111P2 | - | - | |||
| - | 1120V (Pro-V) | - | |||||
| - | - | 1120 (Pro) | |||||
| 030 | 3.217 | 3111P3 | - | - | |||
| - | 1130V (Pro-V) | - | |||||
| - | - | 1130 (Pro) | |||||
| 040 | 3.227 | 3111P4 | - | - | |||
| 30HP
1984-99,
Cross Flow 1981-84, 3/4 Wrist Pin |
2 | STD | 3.000 | 3127PS | - | - | |
| - | - | 5500 (Pro) | |||||
| 020 | 3.020 | 3127P2 | - | - | |||
| - | - | 5520 (Pro) | |||||
| 030 | 3.030 | 3127P3 | - | - | |||
| - | - | 5530 (Pro) | |||||
| 040 | 3.040 | 3127P4 | - | - | |||
| 35HP 1976-80, use 5/8 Wrist Pin #2797 | 2 | STD | 3.000 | 3128PS | - | - | |
| 020 | 3.020 | 3128P2 | - | - | |||
| 030 | 3.030 | 3128P3 | - | ||||
| 040 | 3.040 | 3128P4 | - | - | |||
| 35HP
86-87,
35Jet 90-98, 40HP 84-98, 45com 85-91, 48HP 87-96, |
2 | STD | 3.187 | 3111PS | - | - | |
| - | 1100V (Pro-V) | - | |||||
| - | - | 1100 (Pro) | |||||
| 020 | 3.207 | 3111P2 | - | - | |||
| - | 1120V (Pro-V) | - | |||||
| - | - | 1120 (Pro) | |||||
| 030 | 3.217 | 3111P3 | - | - | |||
| - | 1130V (Pro-V) | - | |||||
| - | - | 1130 (Pro) | |||||
| 040 | 3.227 | 3111P4 | - | - | |||