LS2 LS3 LS7 LSX Performance Engine Valley Cover Block off OEM GM 12599296

Manufacturer: General Motors

Part # 12599296, 12621234

Note: 

• Actual cover you will receive is pictured.
• Hose size for the breather is: 3/8" 
• Popular for Gen III to Gen IV LS conversions and DOD Delete's.
  
• OEM, not an aftermarket replacement.

Please compare to your original to ensure this is the proper part you are needing.