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March Performance Chevy Big Block Serpentine Conversion Kits 20512-08
Part Number: MCH-20512-08
March Performance Chevy Big Block Serpentine Conversion Kits
Big Block Chevy Outward Mount Serpentine Conversion w/ AC
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Estimated Ship Date: Oct 22, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
20512-08
Part Type:
Product Line:
Summit Racing Part Number:
MCH-20512-08
Pulley Style:
Serpentine
Pulley Set Style:
High water flow ratio
Water Pump Style:
Short
Pulley Material:
Aluminum
Pulley Finish:
Black
Water Pump Pulley Included:
Yes
Water Pump Rotation:
Counterclockwise
Water Pump Pulley Grooves:
6-groove, serpentine
Water Pump Nose Cone Included:
Yes
Crankshaft Pulley Included:
Yes
Crankshaft Pulley Grooves:
6-groove, serpentine
Crankshaft Pulley Bolt Hole Quantity:
Three
Crankshaft Nose Cover Included:
No
Power Steering Pulley Included:
Yes
Power Steering Pulley Grooves:
6-groove, serpentine
Power Steering Pulley Attachment:
Keyway
Power Steering Pump Style:
Saginaw
Power Steering Brackets Included:
Yes
Alternator Pulley Included:
Yes
Alternator Pulley Grooves:
6-groove, serpentine
Alternator Fan Included:
Yes
Alternator Nose Cover Included:
Yes
Alternator Brackets Included:
Yes
Air Conditioning Pulley Included:
No
Air Conditioning Cover Included:
Yes
Air Conditioning Bracket Included:
Yes
Idler/Tensioner Included:
Yes
Idler Cover Included:
Yes
Idler Brackets Included:
Yes
Belt Included:
No
Hardware Included:
Yes
Bracket Color:
Black
Bracket Material:
Aluminum
Quantity:
Sold as a kit.
Notes:
Designed to fit conversions with A/C. Designed for use with 55-57 Chevys with side engine mounts and 67-69 Camaros.
March Performance Chevy Big Block Serpentine Conversion Kits
March Performance Chevy big block serpentine conversion kits simply bolt onto the front of any big block Chevy heads. Depending on the kit you choose, the alternator, A/C, and optional power steering will be either outward or mid-mounted. These pulleys are precision CNC-machined from solid billet 6061 T-6 aluminum to fit perfectly and handle high-torque and vibration. They are then clear powdercoated to eliminate polishing in those hard-to-reach places. These pulleys will not fracture like common cast pulleys, since they have high-tensile strength for much longer wear. The street rod ratio increases water flow and fan speed, which helps during critical low-speed driving. The kits are available with performance pulleys for increased horsepower, high water flow ratios for increased cooling, or mid-performance ratios for a combination of both.
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Some parts are not legal for use in California or other states with similar laws / regulations
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