SKU: 3714167280

MACE PLENUM SPACER AND MANIFOLD INSULATOR COMBO PACK TO SUIT HOLDEN COMMODORE VE SIDI LLT 3.6L V6

Sale price$164.66 Regular price$182.95
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

MACE PLENUM SPACER AND MANIFOLD INSULATOR COMBO PACK TO SUIT HOLDEN COMMODORE VE SIDI LLT 3.6L V6Installing either an insulator or a spacer on an engine such as the LLT definitely has its merits but to combine the two components, the gains are truly unrivaled when it comes to budget performance. By increasing the plenum chamber volume with the spacer and lengthening the intake runner length with the insulator, the volumetric efficiency of the motor is improved by a noticeable margin over the entire rev range. These parts are manufactured from a

Installing either an insulator or a spacer on an engine such as the LLT definitely has its merits but to combine the two components, the gains are truly unrivaled when it comes to budget performance. By increasing the plenum chamber volume with the spacer and lengthening the intake runner length with the insulator, the volumetric efficiency of the motor is improved by a noticeable margin over the entire rev range.

These parts are manufactured from a thermo-composite plastic so not only do they provide the benefits already mentioned, but also prevent the manifold from heat-soaking, which maintains a cooler charge air temperature and generates a higher resistance to knock. The result is sustained horsepower gains and crisp-like throttle response.

With all the "bolt on" parts there are available today, these by far are the easiest to fit and arguably yield the greatest results all without the need of an expensive engine re-calibration. We also have packages to accommodate any engine setup or space requirements; catering for forced induction, naturally aspirated and everything in between. We're sure we'll have a combination you'll be exceptionally satisfied with.

 

Contents:

  • 1 X Manifold insulator kit
  • 1 X Plenum spacerkit

Vehicle Fitment Guide


Parts Guide

Please select the part number you require from the variation by utilising our vehicle fitment guide and parts guide.

Notes:
  • Any combination where the plenum spacer is thicker than the insulator should be used on forced induction only.
  • Due to the substantial increase in height, the combinations with a 25mm manifold insulatorwill require minor modification to ensure proper fitment under the bonnet. The plastic cowling will need to be trimmed and a section of the bonnet lining will have to be cut out. A re-stocking fee will apply if under bonnet clearance is misjudged and a kit needs to be returned/exchanged.
  • Please take any necessary measurements prior to purchase. We will not be held responsible for any clearance issues you may have as every vehicle is made with slight differences.
  • If you have any concerns regarding installation, refer to ourKnowledge Base.Fitting instructions are also available on our website.
  • If space allows, a combination of a 12mm plenum spacer with a 6.35mm manifold insulator for forced induction and a 12mm plenum spacer with a 25mm manifold insulator for a naturally aspirated setup, is ideal.
  • These components can be purchased separately through other listings.
  • The image is for illustrative purposes only.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 3714167280

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.0 ★★★★★
Based on 606 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Maritza
Pawtucket, US
★★★★★ 5
Great sleep
Color: White, Size: Queen (Pack of 2), Color: White, Size: Queen (Pack of 2)
Finally found a pillow that is comfortable. Tested about 5 until I found the right one. This is perfect for back and side sleepers. Firm, but soft. Just enough filling and great quality. Will hold up for many years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
N
Verified Purchase
nastyfishy
Belleville, US
★★★★★ 4
Good overall
Color: White, Size: Standard (Pack of 2)
Bought these for our guest bedroom. They are quite overstuffed, so if you like full pillows this will be your thing. As such they are dense and firm. The height is a bit much if you are small framed, but are comfortable overall and stay cool enough to be nice in the summer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
M
Verified Purchase
Marissa
Bozeman, US
★★★★★ 5
Finally Found Pillows Everyone Loves
Color: White, Size: King (Pack of 4)
I LOVE these pillows. I bought the king-size set and ended up liking them so much that I want them on every bed in the house. They’re soft but still supportive, and they actually work for different sleeping positions, back, side, and stomach sleepers. They don’t go flat, but they’re also not overly stiff, which is such a hard balance to find. I throw them in the washing machine which makes them super easy to wash! The size is true to King! They feel cool and hotel-quality, and the down-alternative fill is great if you don’t want real feathers. I wake up without neck pain, and they keep their shape night after night. If you’re picky about pillows (like I am), these are absolutely worth it. Comfortable, affordable, and a great value for a set of four.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
E
Verified Purchase
Emanuel
Cuba, US
★★★★★ 5
Feel perfect, not too soft and not too hard.
Color: White, Size: Queen (Pack of 4)
Incredibly perfect pillows. They feel not firm nor too soft but just right.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
K
Verified Purchase
Kay Cas
Carnegie, US
★★★★★ 5
Comfortable
Color: White, Size: Queen (Pack of 2)
Omg! I love this pillow. I have a hard time finding pillows comfortable, this is the best pillow I’ve purchased. Definitely worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

recommand products