Cart Continue shopping “Holley 300-137BK Intake Manifold LS1 Street Single Plane EFI – Black” has been added to your cart. Remove item Thumbnail image Product Price Quantity Subtotal × Holley 300-137BK Intake Manifold LS1 Street Single Plane EFI - Black $486.95 Holley 300-137BK Intake Manifold LS1 Street Single Plane EFI - Black quantity $486.95 Coupon: Apply Sales Code Update cart Cart totals Subtotal $486.95 Shipping Enter your address to view shipping options. Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update Tax $0.00 Total $486.95 Proceed to checkout