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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Shipping Estimate
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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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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4.7 ★★★★★
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Moms2cool
Fort Morgan, US
★★★★★ 5
Excellent Option with No Chicken products in it.My Dogs Love Them!!!!!
Flavor Name: Peanut Butter with Cranberry
My dogs absolutely love these bones. I have 4 standard goldendoodles who are very sensitive to chicken. So many dog products have chicken or chicken by products like chicken meal. With these bones I don’t have to worry about that. Even though they are fairly expensive, I continue to get them because my dogs love them and are not allergic to any of the ingredients. Great Product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2025
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Melissa Morrissey
Lowell, US
★★★★★ 5
Great Peanut Butter Smell
Flavor Name: Peanut Butter with Cranberry
My Chiweenie really likes these. You could really smell the peanut butter too. Perfect size for my little guy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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NGlass
Port Orchard, US
★★★★★ 3
Too Expensive!
Flavor Name: Peanut Butter with Cranberry
Our two standard poodles love these treats but they are too expensive. They're very small and at over a dollar a piece I just can't justify it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
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T. Well
Port Orchard, US
★★★★★ 4
Good item
Flavor Name: Peanut Butter with Cranberry
Smedium size. Well made. Good quality. Only 10 in a packet for $15, costly imo, but ok. They liked them. Would buy again, can I get a coupon, lol!
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Reviewed in the United States on March 12, 2025
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Verified Purchase
Carolyn Hall
Fort Morgan, US
★★★★★ 5
Where's my Dog treats
Flavor Name: Peanut Butter with Cranberry
I never received, no photo of where it was delivered. Update: Driver dropped off at the wrong address. My neighbor was kind enough to bring to my house. These treats are one of my dogs favorite treats. Sometimes they are a little hard but are mostly soft enough for my older dog.
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Reviewed in the United States on March 30, 2026

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