Pay in installments of $106.25 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley LS EFI Manifold - 2x4 Dual Plane - Black - 300-121BKOverview: Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1 LS2 LS6 engines 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 1960s. 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.
Overview:
Holley EFI 2x4 Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines
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”
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Construction | Cast |
| Emission Code | 3 |
| Engine | GM Small Block Gen III/IV (LS Based) |
| Finish | Black |
| Front Height | 4.47 inch |
| Fuel System Type | EFI |
| Manifold Type | Dual Plane |
| Product Type | Manifold |
| Rear Height | 5.54 inch |
| RPM Power Band | 1500-7000 |
| Warranty | Limited 90 Day |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 18 reviews
Sort
Product Reviews
★★★★★ 5
Fantastic Heat Tape
Color: A-Yellow-2 Roll
This heat tape works fantastically. We use this for sublimating onto coasters, earrings, ornaments and more. It holds it in place and allows the pressing without movement. It withstands the heat very well and comes off without creating marks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2025
★★★★★ 5
Works great! No residue or melting!
Color: A-Yellow-2 Roll
Got the job done. Did not fail under the heat of my t shirt press. Left no residue. Good quality product at a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2025
★★★★★ 5
Very good take
Color: A-Yellow-2 Roll
This is the perfect temperature tape
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Excelente
Color: Blue-4 Roll
La recomiendo al 100% super super buena
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 4
Reliable heat tape that holds firm and releases clean
Color: Blue-2 Roll
The MS WGO High Temperature Tape is an excellent product for sublimation printing and heat transfer work. The blue color makes it easy to distinguish from other tapes in the workshop. At 10mm wide and 33 meters long, each roll provides generous coverage, and getting 2 rolls in a pack makes it a great value. The adhesive holds firmly during heat press operations but releases cleanly without leaving any residue — exactly what you need for sublimation transfers. The heat resistance is genuine; I've used these at typical heat press temperatures (350-400°F) and the tape performs flawlessly without melting, bubbling, or breaking down. The clean release is a major benefit over cheaper alternatives that leave sticky residue and ruin transfers. The narrow 10mm width is ideal for securing the edges of transfers precisely. I've gone through multiple rolls for my sublimation projects and repurchased several times. A reliable, professional-quality tape that does exactly what it promises.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026