Product Summary

322, 364, 401, 425, Aluminum, Polished

  • The sides, ends and fins have all received the polisher's touch
  • Fits Buick Nailhead '53-'66, 401 and 425

Key Specs

MFG. Part #3416
Material TypeAluminum

Need To Know

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Offenhauser 3416 Details

These rugged Offenhauser aluminum valve covers give classic good looks to lots of Hot Rod power plants! The sides, ends and fins have all received the "polisher's touch". Cast aluminum design also helps reduce noise and dissipate heat versus stock valve covers. One cover includes a hole for a breather/filler cap.

Fits all 1953-1966 Buick Nailhead V8 engines.


  • 3-1/2" overall height
  • 21" long @ base
  • 4-1/2" wide @ base

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Offenhauser 3416 Specifications

MFG. Part #3416
Material TypeAluminum
Speedway Motors Catalog Part #560-3416
Overall Length21.00"
Overall Height3.50"
Overall Width4.50"
Sold in QuantityPair