MSD Replacement Magnetic Pickup for GM HEI Distributors 84666

A failing magnetic pickup will compromise your ignition timing and leave you stranded at the track or on the road. The MSD 84666 replacement pickup restores precise trigger signal generation across your entire RPM range, ensuring consistent spark delivery and reliable engine performance. If you're running an OE GM HEI or MSD performance distributor, this is a critical wear item that directly impacts combustion stability and power output.

This is a direct replacement for stock GM HEI distributors and pairs seamlessly with MSD's 8365 and 83653 models. Installation is straightforward—no special tools or fabrication required. Whether you're diagnosing ignition issues on a street engine or maintaining a race setup, having a quality magnetic pickup on hand is essential preventative maintenance.

• Compatible with OE GM HEI
• Works with MSD 8365/83653
• Generates stable trigger signals
• Consistent across RPM range
• Bolt-on replacement
• Sold individually
• MPN: 84666
• Emission Code 5 legal
• 1-year manufacturer warranty