Skip to product information
1 of 2

The Tuner Store

Holley LS EFI Manifold - 2x4 Dual Plane - Black GM LS1/LS2/LS6

Sale
Regular price $799.95
Sale price $799.95 Regular price $899.95


Low stock
Sorry, it's out of stock.

But we can let you know when it's back in.

Payment methods
  • Amazon
  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Visa
  • Secure Checkout
  • Warranty Backed
  • Genuine Parts

300-121BK

90127715857

Shop safely with us

Fitment

Shipping

All in-stock items are shipped on the first available business day. Most orders ship on the same or following business day. 

Out of stock items are shipped as soon as they're available. Many items are built to order. Those items will have an average lead time on the product page. 

All items on our website ship for free. However, a restocking fee equal to the shipping charges incurred by us, the seller will apply to all new condition items returned due to a customer changing their mind. 

High value items will require a signature on delivery for your purchase protection. We will only ship to the verified billing address provided with the order.

Returns

What items are returnable?(eligible for returns)  

  • 30-day return policy, which means you have 30 days after receiving your item to request a return. 
  •  In unused and resellable items, or defective items. 
  •  In the original packaging with all the tags intact. 

What items and exceptions are non-refundable?  

  • Digital Items like Tuning Credits for HP Tuners
  • Gift cards. 
  • Discounted items (if applicable).  

Damage, loss, or theft issues  

  • If the purchased product is faulty, reach out to us within 7 days of the delivered date. 
  • If the purchased product is loss, or theft, Please collect evidence and contact us immediately.  

Refund solutions  

  • Refund to original payment method.
  • Refund to your shopify store credit.

Refund policy

The Tuner Store accepts returns on new products within 30 days from the date of delivery. Items must be received in their original packaging material and in a new status. Used products or customer damaged products will not be accepted. 

The Tuner Store reserves the right to apply a restocking fee to all returns. The purpose of this fee is to recover operational costs related to the purchase and the customer changing their mind.

When returns are the result of the manufacturer defect as determined by The Tuner Store, the return will not be subject to the above restocking fee. 

How soon will I get my refund?  

  • After your return has been processed, you will receive a refund notice from us and it will take an additional 1-3 business days for the refund to be returned to your original payment method. The refund to the store credit is immediate.
  • If more than 5 business days have passed since we’ve approved your return, please contact us at service@tunerstore.com.
Got a question?
Holley LS EFI Manifold - 2x4 Dual Plane - Black GM LS1/LS2/LS6

$799.95

Holley LS EFI Manifold - 2x4 Dual Plane - Black GM LS1/LS2/LS6

Holley LS EFI Manifold - 2x4 Dual Plane - Black GM LS1/LS2/LS6

Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines

Overview
Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines

All GM LS Gen 3 engines equipped with LS1/LS2 style cathedral port cylinder heads. NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly. There is a kit available separately for the LS7 Hi-Ram EFI to allow the use of stock LS7 fuel injectors, P/N 300-230 (see below in the service parts section).

Features:
  • The Holley GM LS1/LS2/LS6 2x4V dual-plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am and at Lemans in the 1960??????s. The technology of the LS pushrod engine is now mated with the im
  • The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power. The LS engine architecture does not utilize an intake mounted water neck or distributor so it??????s perfect for two Holley carburetors and this intak
  • Carbureted and EFI versions available
  • Power band from 1500-7000 rpm
  • Appropriate for any street/performance, muscle car, or street rod enthusiast
  • Cast aluminum construction
  • Intended for use on all GM LS Gen III engines equipped with LS1/LS2 style cathedral port cylinder heads
  • Carb Flange Center-To-Center: 8-5/8???


Details:
  • Color: Black
  • Construction: Cast
  • Engine: GM LS1/LS2/LS6
  • Finish: Black
  • Front Height: 4.47 inch
  • Fuel System Type: EFI
  • Manifold Type: Dual Plane
  • Rear Height: 5.54 inch
  • RPM Power Band: 1500-6500 RPM
  • Warranty: Limited 90 Day


Links
Instruction Sheet
  • Curated from trusted manufacturers

    30,000+

    Performance Parts

  • Shipped directly from verified suppliers

    99%

    Order Accuracy

  • Driven by real enthusiasts

    4.9★

    Customer Rating

Get in touch

We're available 24/7 to assist. Just let us know what we can help you with and we'll do our best.

We'll aim to get back to you within 24 hours.