SecosAutoparts 4F27E Transmission Shift Solenoid & Filter Kit — Mazda/Ford Fit, XS4Z7A098AB Filtered Repair Kit for Smoother Shift

SecosAutoparts 4F27E Transmission Shift Solenoid & Filter Kit is a complete replacement kit that restores proper fluid flow and electronic shift control for 4-speed automatic 4F27E transmissions in compatible Mazda and Ford models.

This kit contains the essential transmission shift solenoid, filter and related components designed to match factory fitment for vehicles that use the 4F27E four-speed automatic transmission. It is offered as a service kit for preventive or corrective maintenance when you’re addressing rough shifting, delayed engagement or when performing a fluid/filter service. The kit lists original-equivalent part numbers XS4Z7A098AB and FN01-21-500 so technicians and owners can verify compatibility.

Which vehicles is this kit compatible with?

The SecosAutoparts kit fits a range of Mazda and Ford vehicles equipped with the 4F27E four-speed automatic transmission. Compatibility spans common model years but always double-check with your vehicle’s VIN or existing part number before ordering.

• Mazda Protegé: late 1990s to 2003 models
• Mazda 3: 2004–2010 model years
• Mazda 5: 2006–2010 model years
• Mazda 6: 2003–2008 model years
• Ford Focus & Transit Connect: 2000–2013 (specific years 2010–2013 for Focus in some references)

What parts and part numbers are included in the kit?

This service kit contains the shift solenoid and a transmission filter sized for the 4F27E transmission, plus any small seals or hardware needed for a typical filter service. The primary reference numbers you can use for cross-checking are XS4Z7A098AB and FN01-21-500.

• Main shift solenoid designed for 4F27E four-speed automatics
• Replacement transmission fluid filter element matched to housing dimensions
• Seals, gaskets or O-rings necessary for a standard filter change
• Pre-shipment bench testing performed by the manufacturer

How does installing this kit affect shifting performance?

Replacing a worn solenoid and clogged filter can improve hydraulic control inside the transmission, which often reduces slipping, rough gear changes, and delayed engagements. While results depend on overall transmission condition, a fresh solenoid/filter restores intended valve operation and fluid flow characteristics.

• Restores proper hydraulic pressure regulation for smoother shifts
• Removes contaminants that can block valve passages and screens
• Helps electrical control modules receive correct feedback from the solenoid
• Recommended during troubleshooting or as part of scheduled maintenance

Are there special installation notes or precautions?

Basic mechanical skills and the correct tools are required to replace the filter and solenoid safely. The manufacturer inspects items and notes that some parts may show factory oil traces; this is normal for pre-tested transmission components. Always consult a service manual or a professional if unsure.

• Confirm 4F27E transmission model and part numbers before purchase
• Use the correct transmission fluid specified by the vehicle maker after installation
• Torque bolts to factory specifications and inspect pan gasket surfaces
• If you notice significant internal damage, consider full transmission evaluation

Who is this for: The SecosAutoparts 4F27E solenoid and filter kit is aimed at independent mechanics, DIY vehicle owners and fleet technicians working on Mazda Protegé/3/5/6 models and Ford Focus/Transit Connect vehicles that use the 4F27E four-speed transmission. It’s appropriate for routine filter service, solenoid replacement during diagnostics, or as a value option when rebuilding or maintaining older 4F27E-equipped cars. If you require exact fitment, verify the vehicle year, transmission type and OEM part numbers prior to ordering.