If you have a plastic Power Steering Pulley, you need to read the information below.
Models
All V6 and V8 Sterndrive Engines with a Serpentine Belt.
All V8 Ski and Inboard Engines with a Serpentine Belt.
Changes
The Power Steering pump pulley material and diameter are changing. The easiest way to
tell them apart is by using a magnet near the outer diameter of the pulley.
Before ordering any serpentine belt parts, refer to the information below.
V6 and V8 305/350 cid engines:
Old pulleys were plastic and 4-3/4 in. (121 mm) in diameter. The new pulley will be metal
and 5-3/4 in. (146 mm) in diameter. The plastic power steering pump pulley is going to
become NLA. For a replacement pulley for an engine with a plastic pulley, order a Belt/Pulley Kit.
A new Belt Kit will be required when installing a Closed Cooling Kit on V6 and V8 305/350
cid Sterndrive engines with the metal 5-3/4 in. (146 mm) pulley.
V8 454/502 cid engines:
Old pulleys were plastic and 4-3/4 in. (121 mm) in diameter. The new pulley will be metal
and 5-3/4 in. (146 mm) in diameter. The plastic power steering pump pulley is going to
become NLA. For a replacement pulley for an engine with a plastic pulley, order a Belt/Pulley
Kit.
For MCM Alpha Models
V6 and V8 305/350 cid with plastic P/S pulley.
Order 57-861758A1 (A)-Replacement Belt/Pulley Kit $113.00. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 with plastic P/S pulley and Closed Cooling.
Order 57-861759A1 (Note 1) (B)-Replacement Belt/Pulley Kit $157.00. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V8 305/350 cid with plastic P/S pulley and Closed Cooling.
Order 57-861049A2 (Note 1) (C)-Replacement Belt/Pulley Kit $107.00. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 with metal 5-3/4 in. (146 mm) P/S pulley.
Order 807901A6 now T6 Belt Pulley Kit $ 183.00 (Note 1) (B)-Order this Belt Kit if a Closed Cooling Kit is going to be installed on the engine.
V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley.
Order 807901A5 Belt Pulley Kit $195.00 (Note 1) (C)-Order this Belt Kit if a Closed Cooling Kit is going to be installed on the engine.
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley.
Order 807901A4 Belt Pulley Kit $174.00 (D)-Order this Belt Kit if P/S pump and hoses are going to be removed on second engine in dual engine boat.
NOTE 1: Closed Cooling heat exchanger may have to be moved to starboard slightly to clear new, larger pulley.
MCM Bravo Models
V6 and V8 305/350 cid with plastic P/S pulley.
Order 57-861757A1 Belt Pulley Kit $150.00 (E)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 and V8 305/350 cid with plastic P/S pulley and Closed Cooling.
Order 57-861049A2 Belt Pulley Kit $107.00 (Note 1) (C)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley.
Order 807901A5 Belt Pulley Kit $195.00 (Note 1) (C)-Order this Belt Kit if a Closed Cooling Kit is going to be installed on the engine.
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley.
Order 807901A3 Belt Pulley Kit $188.00 (Note 1)(F)-Order this Belt Kit if P/S pump and hoses are going to be removed on second engine in dual engine boat.
V8 454/502 cid with plastic P/S pulley.
Order 57-861049A1 Belt Pulley Kit $145.00 (Note 1) (G)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V8 454/502 cid with metal 5-3/4 in. (146 mm) P/S pulley.
Order 57-861050 changes to 57-865615Q07 Belt Pulley Kit $93.00 (H)-Order this Belt Kit if P/S pump and hoses are going to be removed on second engine in dual engine boat.
NOTE 1: Closed Cooling heat exchanger may have to be moved to starboard slightly to clear new, larger pulley.
Replacement Belts Only (unless pulley must be chamged too) for MCM Alpha Models
V6 and V8 305/350 cid with plastic P/S pulley. A Order 57-807755--2 ss 57-861758A1 Belt Pulley Kit $113.00
V6 with plastic P/S pulley and Closed Cooling. B Order 57-807755--7 changes to 861759A1 Belt Pulley Kit $157.00
V8 305/350 cid with plastic P/S pulley and Closed Cooling. C Order 57-807755--3 ss 57-861049A2
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley A Order 57-861758
V6 with metal 5-3/4 in. (146 mm) P/S pulley and Closed Cooling. B Order 57-861759
V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley and Closed Cooling. C Order 57-861049
V6 and V8 305/350 cid without a P/S pulley, second engine in dual engine boat D Order 57-807755--5
Replacement Belts Only for MCM Bravo Models
V6 and V8 305/350 cid with plastic P/S pulley. E Order 57-807755--1
V6 and V8 305/350 cid with plastic P/S pulley and Closed Cooling. C Order 57-807755--3 ss 57-861049A2
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley. E Order 57-861757
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley and Closed Cooling. C Order 57-861049
V6 and V8 305/350 cid without a P/S pulley, second engine in dual engine boat F Order 57-807755--4
V8 454/502 cid with plastic P/S pulley. G Order 57-861049
V8 454/502 cid with metal 5-3/4 in. (146 mm) P/S pulley G Order 57-861049--1
V8 454/502 cid without a P/S pulley, second engine in dual engine boat H Order 57-861050
Replacement Belts Only for MIE and Ski and Inboard Models
V8 305/350 cid F Order 57-807755--4
V8 454/502 cid H Order 57-861050
Belts for V6 and V8 305/350 cid Sterndrive Engines With a High Mounted Delco 65A Alternator.
NOTE 1:All ski, inboard and 454/502 cid engines were not affected by the Delco 65A alternator.
MCM Sterndrive Models
V6 and V8 305/350 cid Alpha with P/S pulley. Order 57-862086 (J)-Replacement Belt.
V6 and V8 305/350 cid Alpha without P/S pulley Order 57-862088 (K)-Order this Belt if P/S pump and hoses are going to be removed on second engine in dual engine boat.
V6 and V8 305/350 cid Bravo with P/S pulley. Order 57-862087 (L)-Replacement Belt.
V6 and V8 305/350 cid Bravo without P/S pulley. Order 57-862089 (M)-Order this Belt if P/S pump and hoses are going to be removed on second engine in dual engine boat.
