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Supertech Performance SPRK-EC3027D-MC Dual Valve Spring and Retainer Kit

(2002-2007 Mini Cooper)

Manufacturer

Picture for manufacturer Supertech Performance

Part Number

SPRK-EC3027D-MC
12 reviews
Sale Price

$606.19

Estimated ship date Thursday, November 26

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Supertech Performance SPRK-EC3027D-MC is a complete dual valve spring and retainer kit engineered for high-performance valvetrain rebuilds. This precision-matched kit includes every component needed for a thorough valvetrain overhaul, ensuring optimal spring rates, correct installed heights, and reliable valve control under demanding performance conditions.

Kit Contents:

  • Valve Springs: SPR-3027D/MC — dual valve springs designed for increased seat pressure and open pressure over OEM specifications
  • Retainers: EC3020T1 — precision-machined retainers matched to the included springs
  • Valve Spring Seats: MC1015D + OEM + KPR-6S/7 (quantity: 32) — complete seating hardware for proper spring positioning and load distribution

Key Features:

  • Dual valve spring configuration for improved high-RPM valvetrain stability
  • Precision-matched components eliminate guesswork and compatibility concerns
  • Engineered for performance applications requiring elevated spring pressures
  • Manufactured to exacting tolerances for consistent performance across all cylinders
  • Suitable for naturally aspirated, turbocharged, and supercharged builds

Supertech Performance Spring and Retainer kits are developed for the performance enthusiast who demands the best in valvetrain components. Each kit is precision matched to deliver superior performance, quality, and value in a single package — making them an ideal choice for engine builders performing complete valvetrain overhauls.

Products specifications

Fits

2002-2007 Mini Cooper

Quick and low cost

Bought a Husky trunk liner for my Civic. Autoplicity had the lowest price I could find, plus I received it in two days. Only problem I had was that their website had a problem with the part fit check. Although the description and part number was for the 2012 Civic, the part check said it would not fit. Had to wait until Monday to call customer service to verify that it would fit before I ordered. Would definitely order from Autoplicity again.

Good

i was very surprised at how easy to use the Autoplicity website is. i had made an wrong entry in the shipto address and the customer service people were very helpful to get it corrected. I found the best price online on exactly what I wanted. Great site, great service. i will definitely shop here again.

Very good prices and quick, easy ordering experience.

Fast

orderd part it is hard to find don't think you can get it but I will try

Thanks

fast and easy

Awesome price. Nice site layout.

Thank you

Great prices

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