Holley EFI 300-137 Holley Single Plane EFI Intake – GM LS1/LS2/LS6

Our eBay Store About Us Contact Us Add to Favorite Sellers Holley EFI 300-137 Holley Single Plane EFI Intake – GM LS1/LS2/LS6 Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.;2500-7000 RPM power band; 4150 Square bore flange; Optimized runner layout and constant cross sectional area – broad torque curve, best vehicle performance from 2500-7000 RPM; Minimum carb flange height – fit in vehicles with minimum hood modifications; Cast aluminum construction – great manifold for centrifugal blower, turbocharged or NOS power adder applications; Efficient casting design – lightweight, consistent wall thicknesses, improved casting quality; Weight – 11.5 lbs.; Height (front) – 5.417″ to the lifter valley cover flange at the engine block front flange; Port size – 2.50″ height x 1.15″ wide; Includes Viton® O-ring intake to cylinder head gaskets – Viton® is a registered trademark of DuPont Performance Elastomers; Kit does not work with factory fuel rails and requires the use of Holley Fuel Rail Kit P/N 534-219; General Policies Payment Method We gladly accept PayPal and All Major Credit Cards. Warranty & Return Policy Holley Performance Products warrants new products to be free from defects in material and workmanship for a period of 90 days from date of purchase. Holley Performance Products Limited Warranty specifically does not apply to products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water,corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog. Buyer pays return shipping Shipping & Tracking Please see the “Shipping and Payment” tab We ship all US orders via United Parcel Service (UPS Ground) A signature is required on all UPS orders over $750 Tracking information will be sent via email after your package ships (you must supply a valid email address during checkout) We ship within 1 business day upon receipt of payment We do not ship to APO/FPO or US Post Office Box addresses We ship internationally thru United States Postal Service (USPS) Express Mail International; allow extra time for international shipments We can not ship as a “GIFT” or ship anything internationally with changes to the invoice Customer Service & Feedback We strive to answer questions submitted thru eBay’s message system within 1 business day If you have a technical question about your purchase, please call our Tech Services department at (866) 464-6553 between 8:00 am – 6:00 pm M-F and Saturdays 9:00 am to 3:00 pm. We want you to be completely satisfied with your purchase – please let us know if you have any problems with your purchase before leaving feedback so we have a chance to make it right – we want your repeat business! Check out the official MSD Performance eBay Store for more great deals!!!