SKU: 16115772329

MSD Pro-Billet Crank Trigger Distributor MSD8558

$370.12 $411.24
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Description

MSD Pro-Billet Crank Trigger Distributor MSD8558Pro Billet Crank Trigger DistributorSmall Big Block Chevy, Tall Block, Low Profile, Adjustable Slip Collar Brand: MSD Part Number: MSD8558 Description: Designed to fit low in the block to clear firewall and intake combinations CNC machined billet aluminium housing and Dupont Rynite base Oversized polished steel shaft with a QPQ coating for friction reduction Shaft is guided by a sealed ball bearing and an extra long sintered bushing Special oil tract

Pro-Billet Crank Trigger DistributorSmall/Big Block Chevy, Tall Block, Low Profile, Adjustable Slip Collar
Brand: MSD
Part Number: MSD8558
Description:
  • Designed to fit low in the block to clear firewall and intake combinations
  • CNC machined billet aluminium housing and Dupont Rynite base
  • Oversized polished steel shaft with a QPQ coating for friction reduction
  • Shaft is guided by a sealed ball bearing and an extra long sintered bushing
  • Special oil tract improves lubrication to the distributor and cam gear
  • O-ring seals can be added to modified blocks to improve oil pressure control
  • Must be used with an MSD Crank Trigger and MSD Ignition Control
  • Supplied with large diameter HEI style distributor cap and rotor
  • Supplied with bronze gear

The MSD Billet Crank Trigger Distributors are designed for racing engines that use a crankshaft triggered ignition. Since most race engines use custom tunnel rams or blowers that limit the space for a distributor, th ese Crank Trigger tributors are designed to fit in tight quarters and still accurately deliver the sparks.

Crank Trigger Distributors are designed to be used with a crank trigger only. The distributors have no magnetic pick-up or advance assemblies.

The unique design of these distributors fit tight intake systems while still transferring the high voltage of the MSD racing ignition to the spark plugs. The high voltage carrying capabilities are the result of several features which have been designed into these Low-Profile Distributors. This includes a large diameter cap with wide spaced terminals and an injection moulded Rynite rotor with thick vanes to stir up the air inside the cap. The high dielectric Rynite base also prevents arcing to the billet housing.
Since these distributors are used primarily in racing applications, an oversized steel shaft is responsible for delivering the sparks. This shaft is QPQ-coated for friction reduction and receives guidance from a sealed ball-bearing assem bly on sintered bushing for smooth operation.
NOTE: Must be used with an MSD Crank Trigger and Ignition Control.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 16115772329

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4.6 ★★★★★
Based on 1522 reviews
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Verified Purchase
SainteD
Birmingham, US
★★★★★ 3
Good size but pee leaks through :(
Size: X-Large, Style: 40 Count, Size: X-Large, Style: 40 Count
I have a 13-14 year old dog who is starting to have very frequent accidents in the house despite us taking her outside every couple of hours, she just drinks too much water which doesn’t mesh well with her weakening, old bladder. She tends to have an accident in two areas (the kitchen and right by the front door hallway) so we decided to buy some puppy pads to minimize the mess & aid in cleanup since clearly taking her outside every couple frequently isn’t helping reduce accidents. We chose these because of the size & price, which are both fantastic compared to others. It perfectly fits the two areas she tends to go so we only need to use one per area and to our surprise, she still remembers how to use puppy pads so she adapted quickly. But unfortunately, these don’t hold all of her pee as they are very thin. I just cleaned up the kitchen puppy pad and saw moisture under the pee spot on the pad. So while it does dramatically reduce how much we need to clean up (we were using one paper towel roll every 3 days just for her accidents), we still need to wipe down the floor with pet accident cleaning spray & mop. It’s not that big of an issue but it is still a bit frustrating that they don’t hold fluid well. So keep that in mind if you decide to order these, that you might still need to wipe down the floor under where your puppy/dog pees. We’ll be trying a different brand when we run out of these to see if that’s any better.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
M
Verified Purchase
Michele Martinez
Port Orchard, US
★★★★★ 5
Great buy
Size: Giant, Style: 40 Count
These pads are great. Absorbent and leak resistant. Very roomy for my chihuahua to turn in her inconsistent circles before and durable enough for her to "dig" after without ripping or bunching up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
R
Ryan
Lowell, US
★★★★★ 5
Solid interactive automatic vibrating dog ball toy
Color: Blue, Color: Blue
Picked up this ITEHZTO interactive automatic vibrating dog ball for our pup and it’s a fun, engaging toy that keeps her entertained. It’s rechargeable with USB, motion-activated, and has a good vibrating/rolling action that gets her chasing and playing on her own. The durable build seems like it can handle some rough play, and it’s a nice size for indoor or outdoor use. It lights up or vibrates when activated which adds extra excitement, especially during evening playtime. Battery life is decent and recharges quickly. Great for when she needs mental and physical stimulation without me having to throw a ball constantly. Overall a solid interactive dog toy that does a great job keeping active dogs busy. Good value if your dog loves chasing moving/vibrating toys!
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Reviewed in the United States on April 30, 2026
C
Chris Brundige
Draper, US
★★★★★ 4
Built-in USB-C solves the power issue, but it is strictly for moderate chewers
Color: Blue
Got this to keep the high-energy puppy occupied indoors so the older dogs can actually get some peace and quiet. The main issue with most automated electronic pet toys is that they rely on expensive, hard-to-find button cell batteries that die after a single afternoon of use. This unit utilizes a built-in 300mAh battery with a standard Type-C charging interface. That is a mandatory design feature if you actually want to run the toy daily without going broke replacing power cells. The internal motor generates enough erratic movement to keep a dog's attention, and it actually has the torque to navigate over standard tile, hardwood, and light carpets without instantly stalling out in a corner. You need to completely understand the physical limitations of what you are unboxing here. The listing explicitly states this is not for heavy chewers, and you need to take that warning seriously. The outer shell is TPU, but the internal chassis housing the electronics is hard ABS plastic. If you hand this to an 80-pound working dog that aggressively shreds thick bones, they are going to crush the housing and destroy the internal motor assembly in about ten minutes. At roughly 2.5 inches in diameter, it's basically the size of a standard tennis ball. If you use it as intended—as an interactive chasing toy for a puppy or a moderate chewer rather than a heavy-duty chew toy—it functions perfectly. It is a highly practical piece of indoor enrichment gear. Solid return on investment for burning off excess canine energy.
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Reviewed in the United States on May 29, 2026
T
The Florida Fam
Chelsea, US
★★★★★ 5
Pawsitively Stimulating🐾
Color: Blue
When my hooman brought this home, I thought it was fur their computer. After all, it has a plug and lights up. When they placed it on the floor, I was pawsomely surprised. Fur real, this little ball is wierd. It doesn't taste at all like my favorite tennis ball. I was a pawplexed that sometimes when I was finally brave enough to get it and hold it in my mouth, it would start jumping around. I think my hoomans finally found a toy that will keep me busy for a while. Mom is howling with excitement because it kept me interested for a long time. I hope I can sleep tonight. I see mom has plugged in my new toy to keep it "charged"- whatever that means....I never had a toy that came with its own leash before. Mom says she is gonna save the toy until other hoomans come over to keep me from being too ruff with them. You see the video, do I look a dog who could be too ruff?- Sincerely, the family dog, a bona-fido toy reviewer
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Reviewed in the United States on May 3, 2026

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