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KEF MSD 85551 Dist.Chvy V8 Blt W/Cap&Rt P15612589KEF-M4685551 https://cdnimages.opentip.com/full/KEF/KEF-M4685551.jpg MSD 85551 Dist.Chvy V8 Blt W/Cap&Rt Manufacturer Part Number: 85551Distributor; Pro-Billet; For Use With Chevy V8 Engines; Without Ignition Control Module; Magnetic Trigger; Mechanical Advance; With Iron Gear; Red Cap With HEI/Male PostsRequired Items Ignition Control Module Attributes Condition: New Finish: Polished Shaft Recommended Use: Street/ Strip/ Track/ Off-Road Spark Advance Type: Mechanical Advance Spark Distribution Type: Magnetic Trigger Drive Gear Type: Iron Gear With Ignition Module: No With Tach Drive: No Includes Cap And Rotor: Yes Cap Color: Red Cap Type: HEI/ Male Posts Coil In Cap: No Product Description This is our most popular performance distributor! The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high RPM stability, a 0.500 Inch steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pickup mounted in the housing. This high output magnetic pickup is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick up is maintenance free! Just above the pick up is MSD\'s adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application.Features & Benefits CNC Machined Billet Aluminum Housing And Billet Aluminum Base Easy To Adjust Mechanical Advance With Supplied Springs And Stop Bushings Maintenance Free Magnetic Pickup And Precision Reluctor Create Stable Trigger Signals Throughout The RPM Range Polished Steel Shaft Is QPQ Coated And Guided By A Sealed Ball Bearing, Advance Plate And Weights Are Fine Blanked From Chrome Moly Steel And QPQ Coated For Friction Reduction Mechanical Advance Assembly Can Be Locked Out For Crank Trigger Systems Advance Weight Pins Are Staked And TIG Welded To The Plate, Nylon Pads Ensure Smooth Operation Of The Advance Weights Limited 1 Year Warranty This Fits1900-1900 Chevrolet Big Block 1965-1990 Gen IV1900-1900 Chevrolet Big Block 1991-1995 Gen V1900-1900 Chevrolet Small Block 1955-19861900-1900 Chevrolet Small Block 1987-1998 (OE Roller)1900-1900 Chevrolet Small Block 383 15612589 085132855513 5.5000lbs 0.00 0.00 0.00
MSD
423.1425 2027-01-08 54 In Stock
customer review - by , December 12, 2025
5/ 5stars
MSD has a superior product works flawlessly
customer review - by , May 5, 2024
5/ 5stars
Installed on my Chevrolet Big Block 496, ran great.

MSD 85551 Dist.Chvy V8 Blt W/Cap&Rt

stars Rating 5 | 2 reviews
Brand MSD
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UPC: 085132855513
SKU: KEF-M4685551
Price: $423.14
Quantity:
54 In Stock
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Product Description

Manufacturer Part Number: 85551

Distributor; Pro-Billet; For Use With Chevy V8 Engines; Without Ignition Control Module; Magnetic Trigger; Mechanical Advance; With Iron Gear; Red Cap With HEI/Male Posts

Required Items




Attributes

  • Condition: New
  • Finish: Polished Shaft
  • Recommended Use: Street/ Strip/ Track/ Off-Road
  • Spark Advance Type: Mechanical Advance
  • Spark Distribution Type: Magnetic Trigger
  • Drive Gear Type: Iron Gear
  • With Ignition Module: No
  • With Tach Drive: No
  • Includes Cap And Rotor: Yes
  • Cap Color: Red
  • Cap Type: HEI/ Male Posts
  • Coil In Cap: No


Product Description


This is our most popular performance distributor! The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high RPM stability, a 0.500 Inch steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pickup mounted in the housing. This high output magnetic pickup is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick up is maintenance free! Just above the pick up is MSD's adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application.

Features & Benefits

  • CNC Machined Billet Aluminum Housing And Billet Aluminum Base
  • Easy To Adjust Mechanical Advance With Supplied Springs And Stop Bushings
  • Maintenance Free Magnetic Pickup And Precision Reluctor Create Stable Trigger Signals Throughout The RPM Range
  • Polished Steel Shaft Is QPQ Coated And Guided By A Sealed Ball Bearing, Advance Plate And Weights Are Fine Blanked From Chrome Moly Steel And QPQ Coated For Friction Reduction
  • Mechanical Advance Assembly Can Be Locked Out For Crank Trigger Systems
  • Advance Weight Pins Are Staked And TIG Welded To The Plate, Nylon Pads Ensure Smooth Operation Of The Advance Weights
  • Limited 1 Year Warranty


This Fits

1900-1900 Chevrolet Big Block 1965-1990 Gen IV
1900-1900 Chevrolet Big Block 1991-1995 Gen V
1900-1900 Chevrolet Small Block 1955-1986
1900-1900 Chevrolet Small Block 1987-1998 (OE Roller)
1900-1900 Chevrolet Small Block 383

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Note

This product is not eligible for coupon code discount, for we've been offering the best price in the market.
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Customer Reviews
5 out of 5
5 stars
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1 stars
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By John L.
Date: December 07, 2025
MSD has a superior product works flawlessly
Rating: 5 stars [5 of 5 Stars!]
By A Customer
Date: May 20, 2024
Installed on my Chevrolet Big Block 496, ran great.
Rating: 5 stars [5 of 5 Stars!]
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