MSD distributor bushing & spring set — direct-fit for Billet/Pro‑Billet, restores shaft alignment

This MSD 8464 kit includes the small mechanical components needed when servicing a distributor: wear‑resistant bushings and the matching spring(s) designed to fit MSD billet and Pro‑billet distributor housings. Keeping these parts fresh helps maintain consistent rotor timing, reduces shaft play, and supports long service life in high‑performance ignition systems. The set is a direct fit for all Billet and Pro‑Billet MSD distributors, simplifying repairs without the need to replace the entire unit.

What exactly does the bushing & spring set replace inside the distributor?

The kit replaces the shaft bushing(s) and the small return/retainer spring that control shaft centering and mechanical advance components. Over time these parts can wear, allowing shaft wobble or uneven tension that affects rotor alignment and distributor performance.

• Replace worn bushings that support the distributor shaft and reduce play.
• Renew the spring(s) responsible for correct mechanical action and tension.
• Match factory dimensions for MSD billet and Pro‑billet housings for a direct fit.
• Minimal tools required — designed for technician or experienced DIY replacement.

How do I know when to install the MSD 8464 kit?

Install the kit when you notice shaft play, inconsistent rotor alignment, or if the distributor is removed for other service and the original bushings or spring appear worn. Preventive replacement during a rebuild restores proper tolerances and can prevent intermittent ignition timing issues.

• Detectable shaft wobble when rotating the shaft by hand.
• Visible wear, scoring, or ovalized bushing bores on inspection.
• Distributor removed for rebuild, performance tune, or high‑mileage maintenance.

Will the MSD 8464 kit fit my distributor model and how easy is installation?

The MSD 8464 set is specifically made to fit all MSD Billet and Pro‑Billet distributors, so it’s a direct replacement for those models. Installation requires basic mechanical skill and common hand tools; follow MSD service guidance or a shop manual for correct disassembly, shaft bearing removal, and reassembly torque specs.

• Guaranteed compatibility with MSD billet and Pro‑billet distributor lines.
• Basic hand tools typically suffice; some steps may require pullers or presses.
• Recommended to inspect mating surfaces and lubricate where specified.

What benefits can I expect after replacing the bushings and spring?

After installing the MSD 8464 kit you should see reduced shaft play, steadier rotor positioning, and more reliable mechanical advance behavior under engine load. That stability supports consistent spark timing and helps the distributor perform as designed across the RPM range.

• Improved rotor centering and reduced timing drift.
• Smoother mechanical movement and consistent spring tension.
• Extends service life of the distributor without replacing the entire unit.

Who is this for: the MSD 8464 Bushing & Spring Set is intended for mechanics, performance builders, and vehicle owners who maintain or rebuild MSD Billet and Pro‑Billet distributors. It’s ideal for routine rebuilds, correcting wear‑related rotor misalignment, or prepping a distributor for high‑performance use where precise shaft support and spring action are required.