SKU: 71880010334

MACE ALLOY MAIN CAP GIRDLE TO SUIT HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6

Sale price$118.32 Regular price$131.47
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

MACE ALLOY MAIN CAP GIRDLE TO SUIT HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6This V6 main cap girdle is designed to reduce "capwalk", stop block web flexing and eliminate cracking of the main caps block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine. Securing the loose end of the main studs provides stability

This V6 main cap girdle is designed to reduce "capwalk", stop block web flexing and eliminate cracking of the main caps/block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine. Securing the loose end of the main studs provides stability unequaled even by a 4-bolt mains setup.

In addition, due to the close proximity of the main stud girdle to the crankshaft and rods it also aids in stripping oil off of the crank, which in itself yields a net gain in HP.

Fabricated from 16mm thick high strength aluminium, these girdles are ideal for use in high rpm/high horsepower applications where block rigidity is critical.


Contents:

  • 1 X Main cap girdle

Vehicle Fitment Guide


Notes:

  • The girdle will require slight modification for a perfect fit. Generally speaking, the oil pick up will require lengthening, and small sections of the block/girdle will require slight modification to prevent/alleviate any fouling.
  • Worst case scenario, if there is a large variance with the block you are using, the girdle will need to be skimmed to make the mating surfaces flush again.
  • Custom length main studs are required. These can be purchased from any authorized ARP dealer.
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: 71880010334

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4.5 ★★★★★
Based on 8 reviews
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Sergio Gonzalez cano
Phoenix, US
★★★★★ 5
Funciono
Funciono un año muy bien, pero despues se quemo el.conector
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
N
Verified Purchase
Nancy Beaucaire
Houston, US
★★★★★ 5
Good compatible part
Great price and easy to install.
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Reviewed in the United States on November 11, 2024
D
Verified Purchase
David Wayne lynch
Chelsea, US
★★★★★ 5
Game changer for my truck
Size: 1.9" x 9.9" x 11.4"
I installed this K&N Lifetime Cabin Air Filter in my 2016 F-150 and noticed the difference right away. The airflow is stronger, and the cabin smells fresher even when driving through dusty or humid areas. What I really like is that it’s washable and reusable—so I won’t have to keep buying filters every year. Fitment was perfect and install took under 10 minutes. Just pop out the old one, slide this one in, and you’re good to go. It feels solid and well made, not like those cheap paper ones. It’s definitely worth the investment, especially if you drive a lot or have allergies. Highly recommend for anyone with a Ford or Lincoln vehicle—it pays for itself quickly!
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Reviewed in the United States on July 3, 2025
B
Verified Purchase
Bill
Lowell, US
★★★★★ 5
Fit 2024 F250 Platinum
Size: 1.9" x 9.9" x 11.4"
Good quality, perfect fit.
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Reviewed in the United States on April 16, 2026
J
Verified Purchase
JAMES ERIK FOREHAND
Lake Worth, US
★★★★★ 5
Great
Size: 1.9" x 9.9" x 11.4"
Great value for the money and easy to install.
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Reviewed in the United States on May 10, 2026

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