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Description
Holley Gen III Hemi Hi-Ram EFI Manifold 300-658BKGen III Hemi EFI for use with 80 and 92mm Mopar Style Throttle Body Black Finish Fits 2009 up 5. 7L, 2005 2010 6. 1L, and 2011 up 6. 4L Features: Add Even More Power to the Gen III Hemi Engine with a Holley Hi Ram Intake Manifold Fits Gen III Hemi Engines w Large Intake Ports (1. 70? Height x 1. 88? Wide) ? fits 2009 up 5. 7L, 2005 2010 6. 1L, 2011 up 6. 4L) Cast Aluminum Construction w Natural Satin or Black Finish Runner Length and the Tapered Cross
Gen III Hemi EFI for use with 80 and 92mm Mopar Style Throttle Body - Black Finish - Fits 2009-up 5.7L, 2005-2010 6.1L, and 2011-up 6.4L
Features:
- Add Even More Power to the Gen III Hemi Engine with a Holley Hi-Ram Intake Manifold
- Fits Gen III Hemi Engines w/ Large Intake Ports (1.70? Height x 1.88? Wide) ? fits 2009-up 5.7L, 2005-2010 6.1L, 2011-up 6.4L)
- Cast Aluminum Construction w/ Natural Satin or Black Finish
- Runner Length and the Tapered Cross Section Designed to Perform Well for a Wide Range of Engine Configurations
- Includes EFI Fuel Rails w/ -8 AN O-Ring Fittings & Large Passages to Accommodate High Fuel Flow and Dampen Pressure Pulsations in the Fuel System
- Works with Gen III Hemi Injectors & Bosch EV-1 Style Injectors
- O-Ring Seal to Head ? Large Retained O-rings Offer Superior Original Equipment (OE) Style Sealing & Are Easy to Replace
- Billet Oil Fill Cap ? Attractive Low Profile Design
- Positive Crankcase Ventilation (PVC) Ports w/ Adapter Fittings
- Overall Height: 11.59?
- Port for OE Style Manifold Absolute Pressure (MAP) Sensor (1 or 2 Bar)
- Cast-In Pads for Adding Nitrous Nozzles
- Manifold Base ? Available Separately for Custom Induction Systems
Specs:
| Basic Operating RPM Range | 1500-7000 RPM |
|---|---|
| Brand | Holley EFI |
| Color | Black |
| Construction | Cast |
| EGR Port | No |
| Emission Code | 3 |
| Engine | GEN 3 HEMI |
| Finish | Black |
| Flange Style | EFI |
| Front Height | 11.59 inch |
| Front Maximum Height | 11.59 IN |
| Fuel System Type | EFI |
| Grade Type | Performance |
| Injector Style Provision | EV-1, Gen III Hemi |
| Inlet Size | 95mm |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Hi-Ram |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| Plenum Finish | Black |
| Port Size | 1.70" x 1.88" |
| Product Type | Intake Manifold |
| Rear Height | 10.35 inch |
| Rear Maximum Height | 10.35 IN |
| Removable Runners | No |
| RPM Power Band | 1500-7000 |
| RPM Power Band | 1500-7000 RPM |
| Runner Length | 6.65 inch |
| Single Or Dual Plane Type | Single Plane |
| Style | EFI |
| Throttle Body Bore Diameter | 95 MM |
| Throttle Body Included | No |
| Throttle Bore | 95mm |
| Type of Component | Intake Manifold |
| Vacuum Ports | (2) 3/8" NPT & (1) 1/4" NPT |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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]
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4.7 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Awesome slippers
Size: 14-15, Color: Fleece Black
Very warm and comfy, I have sasquatch feet (14 wide) and the 14-15 size fit great with plenty of room. It's very hard to find slippers in my size and these are awesome, especially for the price! Definitely recommend these, I've been wearing them pretty much daily around the house during this especially cold northeast winter and they're holding up perfectly.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Warm feet and ankles > everything
Size: 10-11, Color: Red/Black Check
So, I know the foam is going to wear out quick on these, but they are so warm I dont even care. I will update when they start getting beat up. But so far these are great.
The soles on these arent the best. Its coushioned now, but even so my foot hangs off it. BUT, it is thick material and its keeping my feet and more importantly my ankles warm. Thats why I bought these. These isnt much on the bottoms to keep you from slipping hut what they have seems to be alright for now on hardwood floors. They fit true to size and are nice and stretchy, just beware the sole is a bit slim. For example my pinky toe hangs off it on both sides almost fully. Still a 7/10 would recommend for lounging around the house.
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Reviewed in the United States on March 11, 2026
★★★★★ 4
Warm, comfortable booties
Size: 12-13, Color: Red/Black Check
I would give these booties a 5 star because they are soft, warm, comfortable, high on my ankle and a color I appreciate. They are easy to slip on NOW. I say "NOW" because I have a deformed foot due to being broken. That foot was hard to get the bootie on. After 1 try in which some of the stitching came out; it's easy to put on.
The stitching came out far to easily. There are 3 lines of stitching. One line between the sole and 1st layer of polar fleece. That line has had no problem. The other 2 lines have each come out abt 3 inches.
I got size 12
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Very Warm and Comfortable
Size: 12-13, Color: Red/Black Check
Love these. Just like walking on a cloud. They are very warm. Note there is no L or R, fits either foot.
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Reviewed in the United States on April 30, 2026
★★★★★ 3
Seams Separate Quickly
Size: 8-9, Color: Red/Black Check
They fall apart. The seams are terrible and almost immediately separate. Although they are warm and comfortable until stuff comes through the separated seams.
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Reviewed in the United States on March 29, 2026