SKU: 91656772979

Optispark Distributor Vacuum Harness – LT1/LT4 (1993–1997 B/D/F-Body)

Sale price$89.99 Regular price$99.99
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  • USA
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

Optispark Distributor Vacuum Harness – LT1/LT4 (1993–1997 B/D/F-Body)Vacuum harness for LT1 and LT4 engines equipped with a ventilated Optispark distributor, found in B , D , and F body vehicles including the Camaro, Firebird, Impala SS, Fleetwood, Caprice, and Roadmaster. Replaces discontinued GM part number 12555323. Important: This harness is not compatible with Corvettes. Click here for the Corvette specific harness. Upgrade your worn or heat damaged vacuum harness assembly with our high quality replacement. Our

Vacuum harness for LT1 and LT4 engines equipped with a ventilated Optispark distributor, found in B-, D-, and F-body vehicles including the Camaro, Firebird, Impala SS, Fleetwood, Caprice, and Roadmaster. Replaces discontinued GM part number 12555323.

⚠️ Important: This harness is not compatible with Corvettes.
Click here for the Corvette-specific harness.

Upgrade your worn or heat-damaged vacuum harness assembly with our high-quality replacement. Our assembly includes the correct micron filter, check valve, fitting, and hose to suit GM ventilated Optispark distributors.  The check valve and filter match the original micron rating and are constructed from Viton material for enhanced durability. Additionally, the check valve features an integral orifice to help prevent cap implosion.

Key Features:

  • Optimized Vacuum Flow: Our harness assembly is designed with the correct vacuum orifice, ensuring optimal vacuum flow without risking distributor damage.
  • High-Quality Construction: While not original equipment from the manufacturer, our harness is crafted to closely match original specifications and appearance. We use high-quality vacuum hoses and fittings for durability and reliable performance.

Please note: Minor variations may occur due to component availability.

Installation Tips:

Attaching the vacuum hose to the distributor cap can be challenging when the ambient temperature is below 85°F. To ease installation, we recommend using a non-silicone-based lubricant, such as WD-40 or CRC.

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: 91656772979

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4.8 ★★★★★
Based on 6 reviews
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A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Durable for the aggressive chewer.
Color: 3 PCS
My dogs love this product. One of them is a really aggressive chewer. She will chew on this for over an hour at a time. They are very durable and I don't have to worry about them breaking off large chunks and swallowing them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
A
Verified Purchase
Allison
Whiting, US
★★★★★ 3
Super durable quality
Color: 3 PCS
Exactly as advertised! Great quality Great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
D
Verified Purchase
Debbie Collinsworth
Houston, US
★★★★★ 5
Happy dog!
Color: 3 PCS
Great product for a Great Dane aggressive chewer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
J
Verified Purchase
Jazzlyn McClure
Los Angeles, US
★★★★★ 5
Large breed approved
Color: Blue
these incredible aggressive chew toys – they've seriously been a game-changer for my pups! I know it's a bit late, but better late than never, right? I've got a couple of power chewers at home, a Rottweiler and a Labrador, and anyone with big dogs knows the struggle of finding toys that actually last. These bad boys have been in constant rotation for over a year now, and I'm genuinely impressed by their resilience. They're incredibly tough! Funnily enough, we originally had three, but now we're down to just one. The others aren't broken, though – I'm pretty sure my dogs just loved them so much they've hidden them away in some secret stash, as they tend to do with their favorite treasures! Beyond just being durable, these toys have been a massive help with their training. They’re fantastic for redirecting all that enthusiastic chewing away from my furniture and shoes, which, let's be honest, is a huge win for any pet parent! Considering how long they've held up to some serious chomping, the price point is absolutely spot on. You definitely get great value for your money.watch your toe they are heavy. If you've got a dog that's a champion chewer, you absolutely need to try these out. They're a lifesaver!
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Reviewed in the United States on May 21, 2026
C
Verified Purchase
Christine Petrowsky
Houston, US
★★★★★ 5
Great all around
Color: Blue
We have 4 dogs, lab, pit bull, golden retriever, great dane, I bought 4 sets, they are constantly played and chewed on, and are still around everywhere, great to chew on and play with
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Reviewed in the United States on May 27, 2026

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