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Tall M/T Valve Covers for Big Block Chevy Engines - Polished Finish

Cast Aluminum Tall M/T Valve Cover for BBC Engines, Polished Finish

PART# 241-151

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Flashback - 1972: Nothing was cooler than cruising around town in a hot rod with a Holley Double Pumper® and M/T® finned aluminum valve covers! Embrace the nostalgia and show up sporting a new and improved version of those same parts today! "For the custom engine, M/T offers a superior valve cover of polished aluminum for added cooling. Each die-cast cover is precision manufactured with knock-out plugs for stock PCV (smog Control) and oil fill installations. The M/T polished top cover surface may be used for engraving your name horizontally, next to the deep heat dissipating fins." - Text from 1972 Holley - M/T Performance Parts Catalog. Other historic literature stated that you could expect reduced valve train noise from these cast aluminum M/T valve covers. In an attempt to expand the range of the M/T valve cover line for Big Block Chevy engines, this new and improved Tall version offers increased valve train clearance for high-lift rockers and some applications of stud girdles. We've brought them back in the original polished and satin black with machined fins/logo finishes that Holley & M/T helped make popular, as well as a natural cast finish that offers a true nostalgic look on its own, or is ready for custom paint! Order a set today and get back your hot rodding groove!


  • Cast aluminum construction for even gasket sealing and high quality details
  • Tall M/T valve covers for BBC applications allow for generous aftermarket rocker and some applications of stud girdle clearance
  • Precision manufactured with knock-out plugs for stock PCV (smog control) and oil fill installations
  • Includes baffle plates (with mounting screws) and a period correct twist-on oil fill cap
  • Deep heat dissipating fins
  • Top cover surface retains vintage style nameplate pad for custom engraving
  • Available in three classic finishes: natural cast, polished, and satin black with machined fins/logo


ApplicationBig Block Chevy
Emission Code3
Gaskets IncludedNo
Gromment(s) IncludedYes
MaterialCast Aluminum
Mounting Hardware IncludedNo
Oil FillYes
Oil Fill Cap IncludedYes
Product TypeValve Cover
StyleM/T BBC
Type of ComponentValve Cover
WarrantyLimited 90 Day
Part Number241-151

Service Parts



This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

CAUTION: If your engine has non-standard valve train components, such as a high-lift camshaft, roller-tip rocker arm, higher lift ratio rocker arms, stud girdles, etc., there may be insufficient clearance when using the Holley-M/T aluminum valve cover. You must check all internal clearances according to the instructions in the kit.

Warranty Information

Limited 90 Day: See Details


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        Some parts are not legal for use in California or other states with similar regulations.