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Description
Holley Harmonic Balancer Bolt - Chevy Big Block - 12-Point 97-321Replacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396 454 with Holley Mid Mount Accessory Drive System 20 242 & 20 242BK Replacement harmonic balancer bolt with thick washer for Big Block Chevy Mid Mount Accessory drive system. 12 Point, 1 2" Wrench Size, 1 2" 20 x 2. 500" Under Head Length, Washer diameter 1. 5" x 0. 200" Thick. NOTES: Torque Harmonic Balancer Bolt to 85 ft lbs. Features: 180,000 PSI Rating (Grade 9) Made from
Replacement Harmonic Balancer Bolt with Thick Washer, for Chevy Big Block 396-454 with Holley Mid-Mount Accessory Drive System 20-242 & 20-242BK
Replacement harmonic balancer bolt with thick washer for Big Block Chevy Mid-Mount Accessory drive system. 12-Point, 1/2" Wrench Size, 1/2"-20 x 2.500" Under Head Length, Washer diameter 1.5" x 0.200" Thick.
NOTES: Torque Harmonic Balancer Bolt to 85 ft/lbs.
Features:
- 180,000 PSI Rating (Grade 9)
- Made from Steel
- Black E-Coat Finish
- 1/2" Wrench Size
- 12-Point Bolt Head
- Large Diameter Extra Thick Washer - .200" Thick x 1.5" Diameter
- Reusable - Not Torque-To-Yield
Specs:
| Bolt Grade | 10.9 |
|---|---|
| Brand | Holley |
| Color | Black |
| Emission Code | 6 |
| Engine | Chevy Big Block V8 |
| Finish | Black E-Coat |
| Grade Type | Performance |
| Head Drive Type | 12 Point |
| Head Style | 12-Point |
| Length | 2.5Inch |
| Material | Steel |
| Product Type | Harmonic Balancer Bolts |
| PSI Rating | 180,000 |
| Reusable | Yes |
| Thread Diameter | 1/2Inch |
| Thread Pitch | 20 |
| Thread Size | 1/2-20 |
| Under Head Length | 2.500" |
| Universal Or Specific Fit | Universal |
| Washer Included | Yes |
| Washer Size | .200" Thick x 1.5" Diameter |
| Wrench Size | 1/2" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 1677 reviews
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Product Reviews
★★★★★ 4
Great value -
Color: Black, Size: 26"W
Very nice cart for the price. Easy to assemble .. very clear instructions
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025
★★★★★ 5
Excellent
Color: Gold, Size: 33.9"W, Color: Gold, Size: 33.9"W
Even better in person. Assembly was easy. Good quality so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 5
So pretty and functional!
Color: Gold, Size: 33.9"W, Color: Gold, Size: 33.9"W
This cart arrived promptly and was easy to put together for me! I love the 2 mirror shelves, which I had specifically searched for. Usually the shelves on these bar carts are just glass and not mirrored, which means you see right through to the next level, which is wine bottles and the floor. I thought the mirrored shelves reflecting back just what’s placed on it looks so much more elegant. I also like the gold color, but just so you know, it is not the jewelry gold color, but more of a matte metallic taupey-gold (hard to describe). The color is pretty, but not the shiny, yellowish gold color that it appears to be on this seller’s pictures. I added another gold tabletop wine holder (also from Amazon) on the lower shelf and you can see what I mean by the color. Overall, I am pleased with the price, elegant look, easy assembly, the maneuverability, and how much it holds.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2024
★★★★★ 5
yes ma’am 🍸
Color: Gold, Size: 33.9"W
exactly what hat i’ve been looking for!!! no complaints. so so cute and functional.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Strong legs, somewhat industrial but trendy also
Size: side table leg
Good legs, some what utilitarian or industrial, they are strong as they are made out of pipe, and assembly is fairly easy once you get the idea of how it goes together. They are roughly 1.5 feet across maybe a bit less adjustable height on each leg, if you have wood floors you may want to put a pad under each leg as they are full metal pipes. Pretty interesting idea and does not cost much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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