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Description
MSD Pro-Billet Distributor MSD8545Pro Billet DistributorChrysler 383 400, Big Block B, Magnetic Trigger, Mechanical Advance Brand: MSD Part Number: MSD8545 Description: Smaller diameter CNC machined billet aluminium housing and billet aluminium base clears aftermarket heads and valve covers. Easy to adjust mechanical advance with supplied springs and stop bushings. Maintenance free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range. Polished
Pro-Billet DistributorChrysler 383-400, Big Block B, Magnetic Trigger, Mechanical AdvanceBrand: MSD
Part Number: MSD8545
Description:
- Smaller diameter CNC machined billet aluminium housing and billet aluminium base clears aftermarket heads and valve covers.
- Easy-to-adjust mechanical advance with supplied springs and stop bushings.
- Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range.
- Polished steel shaft is QPQ coated and guided by two sealed ball bearings.
- Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction.
- Mechanical advance assembly can be locked out for crank trigger systems.
- Advance weight pins are staked and tig welded to the plate.
- Nylon pads ensure smooth operation of the advance weights.
- Supplied with small diameter cap with HEI style terminals and race rotor (will accept 8441 Cap-A-Dapt).
- Must be used with an MSD 6, 7, 8 or 1 0 Ignition Control. oes not accept a vacuum advance.
Since many Chrysler enthusiasts use the B1 head or aftermarket valve covers, these Pro-Billet Chrysler Distributors have been designed with a small diameter housing. This allows the distributors to fit tight block and head combinations. For accurate timing, a high output magnetic pick-up is used that plugs directly into your MSD Ignition Control. There is an easy-to-adjust mechanical advance mounted on top of each distributor and is easily tuned with an assortment of supplied advance stop bushings and advance springs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Works Great Without the Horrible Smell
Size: 5 Ounce (Pack of 1)
This bug spray does exactly what it’s supposed to do. It works well for keeping bugs away and doesn’t have that strong, overwhelming smell that a lot of repellents do, which I really appreciate. It’s easy to apply, not greasy, and works well for both adults and kids. Overall, it’s been reliable. Definitely recommend!
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Feels great!
Size: 5 Ounce (Pack of 1)
Big spray is never 100% proof, but this gets 5 stars because it’s one of the best bug sprays I’ve used. It doesn’t feel sticky. Women will appreciate this - it doesn’t burn on newly-shaved legs either! The smell isn’t too bad either. I actually bought this because my friend had it while camping in FL a couple weeks ago. We all really liked it.
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Reviewed in the United States on July 12, 2025
★★★★★ 5
Really works for toddler who is allergic to bug bites
Size: 5 Ounce (Pack of 1)
My 1 year old grandson was always covered with huge swollen bug bites when I used other bug repellents. Now his skin is clear. Will make you cough if you breathe it in but otherwise quick and easy to use. Scent less and not sticky at all. Can doesn’t seem to last long. Lotion is also good.
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Reviewed in the United States on August 18, 2025
★★★★★ 4
Strong Family Protection — With Some Minor Trade‑Offs
Size: 5 Ounce (Pack of 1)
I’ve been using OFF! Insect Repellent Aerosol for Adults & Kids (Fragrance‑Free / Picaridin variant, 5 oz) for outdoor family time, and overall it’s been a solid choice. Here’s how it stacks up:
👍 What Works Really Well
1. Good protection, kid‑friendly too
The formula is designed for both adults and children ages 1 year and up, when used as directed. For kids between 1 and 10 years, usage is limited (you don’t want to overapply).
It does a strong job of keeping mosquitoes, ticks, and biting flies away. We spent hours outdoors and did not come back with a swarm of bites. 
2. Feels pleasant — non‑greasy, low residue
A big plus: it doesn’t leave skin feeling sticky, oily, or greasy. That’s always a win when you’ve got wiggly kids who won’t sit still for long. The scent is mild (especially in the fragrance‑free version), and it dries fairly quickly.
3. Long enough duration
You get about 6 hours of protection against mosquitoes (when applied properly). That’s plenty for a few hours in the yard, a picnic, or a short hike.
4. Easy spray application
The aerosol format means you can cover exposed skin and clothing fairly quickly. It’s good for when you need full‑body coverage or you’re applying while kids are wriggly.
👎 What to Be Careful Of / Possible Downsides
1. Must follow directions carefully with young kids
Because the product is strong enough for adults, when using on young children (especially 1‑10 years old), it should be applied sparingly and no more than twice per day on kids. Avoid sensitive areas (eyes, mouth, hands).
2. Spray drift / inhalation concerns
Some users report that spray fumes are noticeable, and in some cases—especially in confined spaces or windy conditions—the aerosol mist can get in kids’ faces or mouths, which is uncomfortable. Spraying in open air and avoiding spraying near the face helps.
3. Reapplication needed if in heavy perspiration or after swimming
Like most insect repellents, you lose effectiveness faster when the skin is wet, or when there’s lot of sweat, or after swimming. So you’ll need to reapply more often under those conditions. Not unique to this product, but worth noting.
4. Aerosol form handling
Because it’s aerosol, you’ll want to handle with care. Spray evenness, avoiding over‑spraying, and storing safely are important. Also: don’t let kids handle it by themselves.
⚖️ Verdict
If you’re looking for a reliable insect repellent that’s strong enough for adult use and safe enough for kids (1 year+), this OFF! aerosol is one of the better options out there. It hits a nice balance: effective, relatively gentle on skin, and convenient. For families who spend time outdoors — hiking, camping, playing — it’s a worthwhile investment.
I’d give it 4 out of 5 stars: loses a bit for aerosol odor and needing care with application, but wins big on protection and usability.
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Reviewed in the United States on September 14, 2025
★★★★★ 5
Will only keep using this stuff
Size: 5 Ounce (Pack of 1)
I have used this brand for quite a while and it works really good for my sensitive skin and it keeps the mosquitoes away
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Reviewed in the United States on January 7, 2026