Holley EFI 300-604 Plenum top for Lo-Ram 300-621

Our eBay Store About Us Contact Us Add to Favorite Sellers Holley EFI 300-604 Plenum top for Ultra Lo-Ram 300-621 Satin Finish; The Holley LS1/2/6 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE or aftermarket cylinder heads. The 300-604 is the plenum top in the 300-621 complete kit. Offering this separately allows you to select your components individually as you build your system. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood. The 300-621 Lo-Ram plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.; General Policies Payment Method We gladly accept PayPal and All Major Credit Cards. Warranty & Return PolicyHolley 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 shippingShipping & TrackingPlease see the Shipping and Payment tabWe ship all US orders via United Parcel Service (UPS Ground)A signature is required on all UPS orders over $750Tracking 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 paymentWe do not ship to APO/FPO or US Post Office Box addressesWe ship internationally thru United States Postal Service (USPS) Express Mail International; allow extra time for international shipmentsWe can not ship as a "GIFT" or ship anything internationally with changes to the invoiceCustomer Service & FeedbackWe strive to answer questions submitted thru eBays message system within 1 business dayIf 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 Holley Performance eBay Store for more great deals!!!