• CD4E, 9-1/4" & 10-1/4"
• CD4E, 9-1/4" (3.0L & 2.3L)

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• CD4E, 9-1/4" (3.0L & 2.3L)

Hardened internal spline

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• CD4E, 9-1/4" & 10-1/4"

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F7 Casting, without Solenoid Pack

CD4E valve bodies are notorious for excessively worn valve bores. A worn CD4E valve body that cannot command proper line rise and TCC apply is a comeback waiting t...Read More

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• CD4E
• LA4A-EL
• Fits '94-'08 except units with the shorter spring.

In Ford CD4E and Mazda LA4A-EL units, low pressure, servo leakage and/or pin bore wear can all cause a degradation of the servo timing and apply rate of the direct...Read More

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• CD4E
• LA4A-EL

A soft reverse clutch drum journal can cause bushing failure and/or reverse clutch drum journal damage in Ford CD4E and Mazda LA4AEL units. To salvage drums with w...Read More

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• CD4E
• LA4A-EL
• Fits pressure regulator valve bore.

Ford CD4E and Mazda LA4A-EL transmissions often develop a leaky end plug at the pressure regulator bore causing line pressure instability, low EPC pressure and ult...Read More

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• CD4E
• LA4A-EL

The CD4E transmission frequently exhibits such symptoms as lube failure, harsh shifts and line pressure instability as well as a variety of TCC Lockup issues. Sonn...Read More

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• CD4E
• LA4A-EL

Reinstalling a rebuilt Ford CD4E or Mazda LA4A-EL can be tricky when it comes time to connect the wiring harness since the brittle plastic connector tabs are prone...Read More

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• CD4E
• LA4A-EL

Ford CD4E and Mazda LA4A-EL transmissions may exhibit such problems as harsh engagements, and/or soft or harsh shifting, particularly from 1st to 2nd Gear. These c...Read More

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• CD4E
• LA4A-EL

Ford CD4E and Mazda LA4A-EL transmissions may exhibit such problems as harsh engagements, and/or soft or harsh shifting, particularly from 1st to 2nd Gear. These c...Read More

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• CD4E
• LA4A-EL

Line modulator bore wear in Ford CD4E and Mazda LA4A-EL units reduces TV oil pressure working on the main regulator valve to boost line pressure. This can be disco...Read More

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• CD4E
• LA4A-EL

Worn bores in the Ford CD4E and Mazda LA4A-EL converter bypass lineup reduce TCC control and cooler flow. This results in bushing or planet failure, reduced conver...Read More

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• CD4E
• LA4A-EL

Ford CD4E and Mazda LA4A-EL transmissions frequently exhibit symptoms of lube failure, harsh shifts and line pressure instability. Wear of the pressure regulator b...Read More

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• CD4E
• LA4A-EL

Tool Kit for 73840-27K

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• CD4E, 9-1/4" & 10-1/4"
• CD4E, 9-1/4" (3.0L & 2.3L)

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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• CD4E
• LA4A-EL

Tool Kit for 73840-BK & 73840-MK

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• CD4E
• LA4A-EL

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

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• CD4E
• LA4A-EL

Tool Kit for 73840-RK & 73840-MK

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• CD4E, 9-1/4" & 10-1/4"

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

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• CD4E, 9-1/4" (3.0L & 2.3L)
• Late LuK units

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

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