SKU: 13346802632

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

Sale price$93.60 Regular price$104.00
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

MACE PLENUM SPACER AND MANIFOLD INSULATOR COMBO PACK TO SUIT HOLDEN STATESMAN WM 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: 13346802632

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Becky
Boise, US
★★★★★ 5
Work well on hubby's heals
Color: Gray
Dr recommended these for hubby's dry cracked heals
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Reviewed in the United States on May 9, 2026
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Misha
Lexington, US
★★★★★ 3
Ehh. Not for me.
Color: Gray
Foot slides when walking in them. The fit was tighter than lead to believe. It did hold the moisture in but the silicone patch is small
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Reviewed in the United States on February 23, 2026
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Secret Angel
Bozeman, US
★★★★★ 5
Transformative for Dry, Cracked Heels!
Color: Original Grey
I recently purchased Dr. Frederick's Original Moisturizing Heel Socks, and they have truly transformed the condition of my feet! I can’t recommend them highly enough. Effective Moisturization: These socks are infused with moisturizing agents that work wonders. After just a few uses, I noticed a significant reduction in dryness and cracking on my heels. My feet feel softer and smoother, and I love that I can wake up to beautifully moisturized skin. Comfortable Fit: The socks are incredibly comfortable to wear, with a snug yet gentle fit. I appreciate that they don’t feel restrictive, allowing me to walk around my home while wearing them without any discomfort. They are also lightweight, making them easy to slip on before bed. User-Friendly: They are super easy to use—just wear them overnight, and let the socks do their magic. I love the simplicity of incorporating them into my nighttime routine. Durable Quality: The quality of the socks is impressive. They wash well and have maintained their shape and effectiveness after multiple uses. I feel confident that they will last a long time. Final Thoughts: If you're struggling with dry, cracked heels, I highly recommend Dr. Frederick's Original Moisturizing Heel Socks. They are a fantastic investment in foot care and have made a noticeable difference in the health of my skin. These socks have become a must-have in my self-care routine!
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Reviewed in the United States on October 4, 2024
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Donna
Carnegie, US
★★★★★ 5
These worked for me!
Color: Original Grey
They worked great. I bought these for cracked sore heels. It took 2-3 weeks but my heels no longer hurt and the cracks have closed and look more like an indention than a crack now. They feel so much better, but I'll probably wear them another week just to be sure they stay healed. They look and feel like regular socks from the outside but only cover the heel with the toe open. Not think but not thick, again like regular socks. They would probably be slippery on a smooth surface the same as socks. The inside feels like rubber or something smooth at the heel. I have washed them once each pair and accidentally dried one pair in the dryer. They still seem to feel the same so I think they're fine. They're pretty inexpensive and had different colors and sizes.
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Reviewed in the United States on February 10, 2026
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Mimi
Boise, US
★★★★★ 4
Truly Helped My Cracked Heels
Color: Original Grey
I didn't include a photo cause they look exactly like their advertisement photo. I so liked the silicon-type heel lining as it kept the heel-repair cream on my heel and did not get soaked up by the sock. But, it is so, so slippery when walking around in them! Take care to be mindful when you set each foot down as the lotion can slide your heel across the sock quite a bit. If these socks were for an elderly person, I would have them only sit while using the sock - no walking around for fear of falling. I have larger ankles and found that having both the top and the bottom hems/elastic, etc. the same size to be quite troublesome and was not a nice feeling or fit on my upper hem that hit my ankle. Don't get me wrong, I am so glad that I got them and I continue to use them and they are helping my horribly-cracked heels greatly, but I find that I have to keep moving the top hem up and down so that it doesn't stay in one position as it cuts in to my ankle. My feedback and advice might be to please make the upper hem somewhat larger than the one that is on the bottom and goes over my actual foot. They really should not be the same circumference...or else make different sizes - S, M, L, etc. That's really my only complaint or "con" to ordering these. I think they are a great concept and I like the fact that I can throw them in the washer and dryer.
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Reviewed in the United States on June 8, 2024

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