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Description
MSD 8.5mm Super Conductor Spark Plug Leads 90deg Boot V8 Universal # MSD31233MSD 8. 5mm Super Conductor Spark Plug Leads 90deg Boot V8 Universal # MSD31233 Spark Plug Wires, Super Conductor, Spiral Core, 8. 5mm, Black, 90 Degree Boots, Universal, L8 V8, Set Assembled: No Distributor Terminal Ends: Male HEI and Female Socket Distributor Boot Color: Gray Distributor Boot Material: Silicone Spark Plug Boot Ends: Eight 90 degree Spark Plug Boot Color: Gray Spark Plug Boot Material: Silicone Wire Color: Black Diameter (mm): 8. 50mm
MSD 8.5mm Super Conductor Spark Plug Leads 90deg Boot V8 Universal # MSD31233Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, 90 Degree Boots, Universal, L8/V8, Set
Assembled:No
Distributor Terminal Ends:Male/HEI and Female/Socket
Distributor Boot Color:Gray
Distributor Boot Material:Silicone
Spark Plug Boot Ends:Eight 90 degree
Spark Plug Boot Color:Gray
Spark Plug Boot Material:Silicone
Wire Color:Black
Diameter (mm):8.50mm
RFI Suppression:Yes
Coil Wire Included:Yes
Conductor Style:Spiral core
Spark Plug Wire Resistance:50 ohms/ft.
Quantity:Sold as a set.
Notes:Includes vice mount wire crimping tool.
MSD 8.5mm Super Conductor spark plug wire sets feature a special helically wound core that has just 40-50 ohms of resistance per footbut with an RFI suppression equal to a 1,500 ohm wire. In fact, each foot of finished wire includes 40 ft. of tightly wound copper for superior conductivity. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference "choke." This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. A tough, 8.5mm synthetic/silicone jacket over an extra-heavy glass braid and dielectric insulator keeps the current guided to the plugs. Underneath the high-temperature boots, dual crimp stainless steel terminals feature snap-locks to ensure a secure fit. Each set comes with clip-on cylinder markers for easy identification. MSD's 8.5mm Super Conductor wire sets are available in custom or universal-fit applications.
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4.1 ★★★★★
Based on 662 reviews
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Product Reviews
★★★★★ 3
Would be better with longer cable and without the LED light.
I like that the install is very easy, non-permanent, and can be very quickly removed if needed. It fast charges and the magnets are strong (the reviews that say it doesn’t hold probably aren’t using a MagSafe case).
That said I have two annoying issues:
1) There is a light that comes on when the car is turned on. If you don’t put your phone on the charger it will say on for a minute or two and then eventually turn off.
2) The included USB-C cable is too short. It only just barely reaches the outlet in the front bottom center console. It would be better if they had included a 6ft with a 90-deg connector to draw power from the back seat ports.
3) It doesn’t not include a charger.
In all, the mount and charger are fine, but be prepared to spend an extra $20 on a longer cable and charger to make it all work.
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Reviewed in the United States on November 4, 2025
★★★★★ 5
Great Mag case phone holder
Works great holding my phone in front of me while I drive.
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Reviewed in the United States on April 3, 2026
★★★★★ 2
Phone holder, not charger.
Nice plastic phone holder, works a lot better if you don’t have a phone case, it fits almost flushed. It doesn’t use “stickiness” to hold its self, just pressure from bottom phone, it holds nicely but has a little gap on the sides, it too much pressure is applied then Tesla screen starts showing pressure. The wire is small but reaches the under panel how ever, it does not fit flushed, will need to do some tinkering. I slide the wire under the charger where the phones go. Now the door can’t close but it can pass through. That charger is not fast but it works.
Edit: nah, don’t get it. The charger doesn’t charge, it will charge them stop. It works like a phone holder…
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Works Very Good!!!
I been using this Tesla Car Mount Charger for a while and its very easy to used, it has good size, and, good quality. In general im satisfied!
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Reviewed in the United States on January 21, 2026
★★★★★ 1
Doesn't fit 2015 C300 4matic mercedes
Color: Textured
It doesn't fit 2015 C300 4matic mercedes
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Reviewed in the United States on May 30, 2026