Product Summary

Billet Aluminum, Powder Coated, Black, Gaskets Included

  • Precision CNC-machined from 1/4" billet aluminum
  • The plates replace the stock cast aluminum 10 bolt valley pans on Gen III LS engines
  • The valley plates have a black powder coat finish and include all of the necessary O-rings, seals, and stainless steel fasteners
  • Breather valley plates have NO provision for oil filling
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Key Specs

MFG. Part #GMLS2003B
BrandModern Classic
Material TypeBillet Aluminum
FinishPowder Coated
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Modern Classic GMLS2003B Details

LS Classic Series Gen III Breather Valley Plates combine the classic look and function of an OEM style chrome oil fill tube and breather cap into a modern LS engine.

  • Precision CNC-machined from 1/4" billet aluminum
  • The plates replace the stock cast aluminum 10 bolt valley pans on Gen III LS engines
  • The valley plates have a black powder coat finish and include all of the necessary O-rings, seals, and stainless steel fasteners
  • Breather valley plates have NO provision for oil filling

For all technical/repair/warranty product questions or needs, please contact LS Classic directly. For all other inquiries regarding shipping and delivery information, please contact the Speedway Motors Customer Experience Center.

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.

Modern Classic GMLS2003B Specifications

KEY SPECS
MFG. Part #GMLS2003B
BrandModern Classic
Material TypeBillet Aluminum
FinishPowder Coated
GENERAL
Sold in QuantityEach
ColorBlack
Gaskets IncludedYes
Hardware IncludedYes
Overall Thickness0.25"
Valley Plate IncludedYes
NotesFits Gen III LS engines with 10 bolt valley pans
GTIN Code847087045582

Questions & Answers

Fitment

  • GM LM4

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  • GM LM7

  • GM LM4

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  • GM L59

  • GM LM7

  • GM L59

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  • GM LM4

  • GM LM4

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  • GM L33

  • GM LM7

  • GM L33

  • GM LM7

  • GM L33

  • GM LM7

  • GM L33

  • GM L33

  • GM L59

  • GM LM7

  • GM LM7

  • GM LM7

  • GM LM7

  • GM L59

  • GM LM7

  • GM LS1

  • GM LS1

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