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The inner stator race in CD4E 9-1/4" and 10-1/4" and CD4E 9-1/4" (3.0L and 2.3L) units commonly needs to be replaced due to wear and spline damage. Sonnax offers i...Read More
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Tool Kit for 73840-BK & 73840-MK
Sonnax drill kit 73840-DK contains replacement drill bits used for lube modifications made during installation of 73840-RK. The three drill bits are replacements f...Read More
Tool Kit for 73840-RK & 73840-MK
Sonnax oversized O-ring FD-O-17V can be used in Ford CD4E torque converters with worn piston bores. Be sure to resize the bore to 1.759” ±.001”. To avoid the risk ...Read More
Late model Ford CD4E torque converters manufactured by LuK have a slightly larger impeller hub bore than earlier model units, which use Sonnax bushing FD-B-4. Sonn...Read More
Sonnax scarf cut seal FD-O-16 replaces damaged or worn piston seals in late Ford 9-1/4" CD4E torque converters. This converter is stamped "H" on the pilot and is used in Ford Escapes and Tributes.
Sonnax offers torque converter rebuilders the direct replacement OE solid piston seal FD-O-20 for the late Ford CD4E, 9-1/4" and AX4S/N torque converters. An expan...Read More
Hardened internal spline
Requires 10 rivets per rebuild. Hardened internal spline teeth.
The AX4S, AX4N (4F50N) single clutch converters have a piston that is prone to cracking due to manufacturing flaws. A cracked piston will not only lock up improper...Read More