How long are these wires, end to end? I’m actually messing with adding LS coils to a car that didn’t have them previously… need fairly long wires… everyone says 8.1 wires will fit not problem, I’d like to measure and make sure before I buy these ????
Thanks!( John, 07/23/2023 )
This wire is approximately 14.5" long overall.
1/ If I go with these Magnum wires will there be any interference from EFI or RMI to the electronic devices of the RV.
2/ Can these be used with msd ignition( Jerry Burns, 04/27/2023 )
1. No, there will be absolutely no interference with any of your electronic devices, the patented RFI suppression ring our wires use are unique and eliminate the possibility.
2. Yes, our wires would be compatible with MSD ignition coils.
I have 56,000 miles on my 2002 W22 chassis for a 2003 Newmar Mountain Aire 37 ft gas motorhome with the 8.1 L Vortec. It runs well and I have the original spark plugs in it but have a set of the 41-101 iridium plugs that I plan to install. My question - what is he benefit to installing your SPW8100 Magnum plug wires with the new iridium plugs? Can I expect improved performance? The engine is bone stock. Thanks.( Jerry Eck, 06/24/2021 )
The Magnum wires improve the spark energy to the spark plug because they have no resistance in the wire. They would also last the lifetime of the vehicle, so no need to ever change again.
I am about to order the SPW8100 - UltraPower 8.1L Magnum Spark Plug Wires and noticed the caveat that the "wires must be installed with GM factory heat shields which may be reused off your old wires".
If any of the existing heat shields are damaged or such as not to be able to be used again, do you have them available or at least know the part number so I can get them from a local Chevrolet or GMC dealership?( Jeff, 01/29/2021 )
If you need a replacement heat shield, the part # is 19329681. We do have them in stock if your local GM dealer does not: https://www.ultrarvproducts.com/19329681-Spark-Plug-Wire-Shield
How do I decide if one of these wires has gone bad? I’m having an issue with my 8.1 vortex misfiring slightly loosing power going up slight grade under power. Have replaced coils today but still have some misfireing after about 2 hours of driving. Replaced with your wires and new iridium plugs about 5000 miles ago. Motor home is throwing no codes. No check engine light. Have run with Obd2 connected and no codes. ( Gary Delpiano, 10/25/2020 )
You will need to pull the wires and inspect for any heat damage. Check resistance on each wire, they should be at or near 0 ohms and if you have one that is significantly higher than the rest that would indicate a bad wire.