SKU: 59839583273

Holley LS1/LS2/LS6 Ultra Lo-Ram EFI Intake Manifold, Black Finish (HO300-621BK)

Sale price$1087.65 Regular price$1208.50
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Description

Holley LS1/LS2/LS6 Ultra Lo-Ram EFI Intake Manifold, Black Finish (HO300-621BK)HO300 621BK BLACK HOLLEY MODULAR LO RAM Suit Single GM 105mm Throttle Body Part Number: HO300 621BK 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 manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the

HO300-621BK - BLACK HOLLEY MODULAR LO-RAM

Suit Single GM 105mm Throttle Body

Part Number: HO300-621BK

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 manifolds will work with OE or aftermarket cylinder heads. The Ultra 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.
Features:
Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral cylinder heads
Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
Modular design allowing the use of front-feed plenum entry

Intake design facilitates custom inlet duct and throttle body placement

Low height to fit under a stock or mildly modified hood in the front configuration
Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)

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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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SKU: 59839583273

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4.9 ★★★★★
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TF
Lexington, US
★★★★★ 3
Would be better with longer cable and without the LED light.
I like that the install is very easy, non-permanent, and can be very quickly removed if needed. It fast charges and the magnets are strong (the reviews that say it doesn’t hold probably aren’t using a MagSafe case). That said I have two annoying issues: 1) There is a light that comes on when the car is turned on. If you don’t put your phone on the charger it will say on for a minute or two and then eventually turn off. 2) The included USB-C cable is too short. It only just barely reaches the outlet in the front bottom center console. It would be better if they had included a 6ft with a 90-deg connector to draw power from the back seat ports. 3) It doesn’t not include a charger. In all, the mount and charger are fine, but be prepared to spend an extra $20 on a longer cable and charger to make it all work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
L
Verified Purchase
Lance Johnson
Houston, US
★★★★★ 5
Great Mag case phone holder
Works great holding my phone in front of me while I drive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
J
Verified Purchase
Joe say luis
Los Angeles, US
★★★★★ 2
Phone holder, not charger.
Nice plastic phone holder, works a lot better if you don’t have a phone case, it fits almost flushed. It doesn’t use “stickiness” to hold its self, just pressure from bottom phone, it holds nicely but has a little gap on the sides, it too much pressure is applied then Tesla screen starts showing pressure. The wire is small but reaches the under panel how ever, it does not fit flushed, will need to do some tinkering. I slide the wire under the charger where the phones go. Now the door can’t close but it can pass through. That charger is not fast but it works. Edit: nah, don’t get it. The charger doesn’t charge, it will charge them stop. It works like a phone holder…
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Reviewed in the United States on April 15, 2026
B
Verified Purchase
Betsy Gutierrez
Massapequa, US
★★★★★ 5
Works Very Good!!!
I been using this Tesla Car Mount Charger for a while and its very easy to used, it has good size, and, good quality. In general im satisfied!
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Reviewed in the United States on January 21, 2026
T
Verified Purchase
TJ
Massapequa, US
★★★★★ 5
Great Wireless Charger for Model Y 2026
Works very well in my 2026 Tesla Model Y. The mount fits nicely and looks clean . Wireless charging is fast and convenient, and the phone stays secure while driving. Easy to install
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Reviewed in the United States on May 12, 2026

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