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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Holley Cast Aluminum Timing Chain Cover - 21-150Overview: Holley now offers a solution to the plastic OEM timing chain covers on 1996 up Vortec Small Block Chevy engines. Our cast aluminum timing chain covers are an excellent upgrade from the OEM part, offering the superior durability of an aluminum part with improved functionality. These cast aluminum covers feature timing indicators molded into the body and are available with or without a crank sensor provision to accommodate both carbureted and
Overview:
Holley now offers a solution to the plastic OEM timing chain covers on 1996-up Vortec Small Block Chevy engines. Our cast aluminum timing chain covers are an excellent upgrade from the OEM part, offering the superior durability of an aluminum part with improved functionality.
These cast aluminum covers feature timing indicators molded into the body and are available with or without a crank sensor provision to accommodate both carbureted and EFI applications. The covers are available in two finishes; Natural Cast and Satin Black. They are packaged with a high quality gasket and E-coated mounting hardware for added corrosion resistance
Features:
- Designed as an upgrade from the plastic OEM timing chain covers on 1996-up Vortec Small Block Chevy engines - Replaces GM part numbers 10244600, 12523972, 12523973, 12558343, 12562818, & 93800970
- Excellent upgrade for Chevrolet Performance crate engines that use the plastic timing chain cover
- Available for EFI (with crank sensor provisions) and carbureted applications (without crank sensor provision)
- Includes over-molded FKM oil seal, virtually eliminating concerns of the seal spinning out at high temperatures, which is common with other aluminum timing covers
- Timing indicator cast into the cover – Intended for use with 8” Vortec balancers and other popular 8” aftermarket balancers
- Accommodates both stock and aftermarket water pumps
- Includes high quality gasket, corrosion resistant E-coated hardware, and dowel pins
- Offered in Natural Cast and Satin Black finishes
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1985 - 1986 | Chevrolet | C10 | 262/4.3L V6 | |
| 1985 - 1986 | Chevrolet | C20 | 262/4.3L V6 | |
| 1985 - 1986 | Chevrolet | G10 | 262/4.3L V6 | |
| 1985 - 1986 | Chevrolet | G20 | 262/4.3L V6 | |
| 1985 - 1986 | Chevrolet | G30 | 262/4.3L V6 | |
| 1985 - 1986 | Chevrolet | K10 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | C1500 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | C2500 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | G3500 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | K1500 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | G1500 | 262/4.3L V6 | |
| 1985 - 1986 | GMC | G2500 | 262/4.3L V6 | |
| 1985 | Chevrolet | Astro | 262/4.3L V6 | |
| 1985 | Chevrolet | K20 | 262/4.3L V6 | |
| 1985 | GMC | K2500 | 262/4.3L V6 | |
| 1985 | GMC | Safari | 262/4.3L V6 |
Specs:
| Application | Small Block Chevy |
|---|---|
| Brand | Holley |
| Crank Sensor Provision | No |
| Emission Code | 5 |
| Engine | Chevrolet VORTEC V8 |
| Finish | Natural |
| Gaskets Included | Yes |
| Material | Aluminum |
| Mounting Hardware Included | Yes |
| Product Type | Timing Chain Cover |
| Thickness | Standard OEM |
| Warranty | Limited 90 Day |
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
4.1 ★★★★★
Based on 337 reviews
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Product Reviews
★★★★★ 5
Great quality wire for any automotive or 12 volt wiring
Size: 16 AWG-100 ft
This GS Power 16 gauge wire is excellent quality for any automotive wiring project. The copper is true OFC pure copper, not copper clad aluminum. It’s flexible, easy to route, and holds up well without the insulation feeling cheap or brittle.
I have used it for automotive accessory wiring and some 12V equipment projects and it handled everything perfectly. The wire pulls cleanly, solders well, and the insulation thickness gives it a durable feel without being overly bulky.
If you need dependable wire for automotive, marine, RV, audio, or general electrical projects, this is a great buy. I would absolutely purchase it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Real copper
Size: 16 AWG-100 ft
Good quality. Copper wire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Quality all copper wire
Size: 16 AWG-100 ft
True16 Gauge pure copper wire
Quality wire with a high strand count
Nice insulation not overly stiff or too soft
Expect I will be buying more as it is a good value for the $
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2025
★★★★★ 5
Wire works as specified, no issues and good price
Size: 16 AWG-100 ft
Wire is as specified. Works great, no issues. Good price when I purchased. The wire insulation is not overly stiff and can handle manipulation well.
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Reviewed in the United States on August 5, 2025
★★★★★ 4
Not the sorry copper coated aluminum.
Size: 16 AWG-100 ft
The wire is 16 gauge plenty big for my system. Heck, the wires supplied with my stereo, copomonet speakers, and amplifiers are about 20 or 24 gauge. I'm quite sure the wire will be more than suffeceint. I, m installing a mono sub amplifier a four-way amplifier to the sub amp outputs and the front of lines of the stereo. I'm gonna be pushing 20 speakers all except the sub woofer only pushing 100 watts a channel and the sub will push 150 watts. That makes 21 altogether. Not much just good clean sound. I've been working on the project going on 5 years now. Been bargain hunting, besides the work I've only got about $650 in the project. Can't wait to get it completed here around the end of July.
Hopefully, it will sound great didn't want to pay anyone. Seen too many "professional" jobs that were subpar. I've seen some nightmares. Figured if l did the job then who could I blame at least I can only blame myself and didn't pay $1,000 for it. 😁🤔
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Reviewed in the United States on June 30, 2021
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