Bolt Together Torque Converter Replacement O-Rings
All Neal Chance Bolt Together Converters use an O-ring to seal the two halves. If you need a replacement O-Ring, you can buy them from us direct, or if need be you can get these at an Auto Parts Store. We use the same seal as popular transmission front pump O-rings, so they are readily available. See chart below for applications. Torque specs on the bolts around the converter are 17-20 ft. lbs. – Do Not Over Torque!! Make sure and use a star pattern for the first 8 bolts tightened.
| PN# | Converter Diameter | O-Ring Application Cross Reference |
Price |
| BTOR-8.0 | 8″ | Same as GM TH350/TH400 Front Pump O-Ring | $4.00 |
| BTOR-9.5 | 9.5″ | Same as Ford ATX Front Pump O-Ring | $4.00 |
| BTOR-10.5 | 10.5″ | Same as C6 Ford Front Pump O-Ring | $4.00 |
Titanium Converter Bolts
Reduce rotating weight with Titanium Bolts.
| PN# | Description | Price |
| TIBOLTKIT | Titanium 5/16-24 Bolt Kit for Converter Body | $300.00 |
| TIBOLT | Titanium 5/16-24 Bolt for Converter Body | $10.00 ea |
Mechanical Diode Replacements
Mechanical Diodes seldom need replaced, but occasionally something may go wrong and a replacement is needed. These are the standard Mechanical Diodes used in NCRC Converter assembles. For information on how to install a Mechanical Diode – see our Assembly Instructions Page.
| PN# | Description | Price |
| GM-MD | Chevy Style 5 Strut Diode Kit | Call |
| GM-MD12 | Chevy Style 10 Strut Diode Kit | Call |
| FD-MD | Ford Style 5 Strut Diode Kit | Call |
| FD-MD12 | Ford Style 10 Strut Diode Kit | Call |
| FMX-MD12 | 10 Strut for 1 3/16″ Input Shaft Transmissions | Call |