My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

MSD 8120 Pro Mag Replacement Cap Ring for Pro Mag 8130, 8140, 8150, 8160

Manufacturer

Part Number

8120
Sale Price

$118.95

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The MSD 8120 Pro Mag Replacement Cap Ring — commonly known as "the black ring" — is the OEM-style replacement spacer designed for full-size, band clamp Pro-Mag magnetos. This cap base adapter serves as the critical interface between the distributor cap and the magneto housing, ensuring a secure, properly aligned cap seating on your Pro-Mag unit.

Key Features:

  • Direct replacement for the original black cap ring found on full-size, band clamp Pro-Mag units
  • Functions as a cap base adapter, allowing the large-diameter distributor cap to properly mount to the Pro-Mag magneto
  • Compatible with MSD Pro-Billet EFI Ford distributors (PN 8451, 8452, 8453, 8455, 8456)
  • Compatible with MSD Pro Mag magnetos (PN 8130, 8140, 8150, 8160)
  • Sold individually

Keep your MSD Pro-Mag magneto performing at its best by replacing worn or damaged cap rings with this genuine MSD replacement part. Proper cap seating is essential for consistent ignition timing and reliable spark delivery in high-performance racing applications.

Compatible Part Numbers: 8130, 8140, 8150, 8160

Products specifications

Prop 65

No

Was looking online for the best price on a part and found that autoplicity had the lowest price and free shipping on it. I ordered it and it was shipped the next day along with tracking number. I will be ordering a few more parts from autoplicity. Order Number: 27769

Ordering the product was easy and rep. Was helpful! The product was shipped fast and came a little messed up in package but complete to my knowledge.

Best price shipped on my product period. MBRP light bar for my Wrangler JK. Product shipped day after order was placed and arrived 2 business days later. Product was as advertised. Best price, fast service= return customer. Thanks

awesome..... great to deal with.. fast shipping and excellent customer service

Fast service, great prices, highly recomended retailer.

Excellent and very quick service. I could not find this product in stock from any other supplier so I kept hunting. I found Autoplicity and from now on they are the first company I will try. Thank you.

Fast -regular- shipping even on large items. I was skeptical at first but I am happy and don't regret my purchase!!!

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy