DIY Installation Guide: Performance Air Filter for 1987-2002 Ford Mazda Fiesta Probe 323 626

Congratulations on your purchase of a performance air filter for your 1987-2002 Ford or Mazda! This guide will walk you through the simple installation process, typically taking 15-30 minutes. Before you begin, gather your tools and ensure you’re working in a well-lit, safe area.

Tools You’ll Need:

• Flathead Screwdriver (for hose clamps on some models)
• Phillips Head Screwdriver (if air box uses screws)
• 10mm Wrench or Socket (for battery terminal)
• Clean Shop Rag

Installation Steps:

Step 1: Safety First & Prep

Ensure your 1987-2002 Ford Mazda Fiesta Probe 323 626’s engine is cool to the touch. Locate your vehicle’s battery and use the 10mm wrench or socket to disconnect the negative (black) battery terminal. This prevents any accidental electrical issues during the install.

Step 2: Locate the Factory Air Box

Identify the factory air filter housing. On most 1987-2002 Ford Mazda Fiesta Probe 323 626 models, this is a large, black plastic box typically located near one of the fender wells, connected to the intake manifold by an intake tube.

Step 3: Remove the Air Box Cover

Depending on your specific 1987-2002 Ford Mazda Fiesta Probe 323 626 engine and year, the air box cover will be secured by either metal clips, screws, or a combination. Release these clips or use your Phillips head screwdriver to remove any screws holding the top half of the air box in place. You may also need to loosen a hose clamp on the intake tube where it connects to the air box lid and gently wiggle the lid free.

Carefully lift and remove the air box cover. You might need to maneuver it around some hoses or wiring harnesses, but avoid forcing anything.

Step 4: Remove the Old Air Filter

With the air box cover removed, you’ll see the old, often dirty, factory air filter. Simply lift it straight out of the housing. Note its orientation as you remove it.

Step 5: Clean the Air Box

Inspect the bottom of the air box for any leaves, debris, or excessive dust. Use your clean shop rag to wipe out any foreign material. This ensures your new performance filter has a clean environment to draw air from.

Step 6: Install the New Performance Air Filter

Take your new performance air filter. Orient it correctly, matching the way the old filter was positioned, and carefully place it into the air box housing. Ensure it sits flush and creates a good seal around the edges.

Step 7: Reinstall the Air Box Cover

Carefully place the air box cover back into position. Ensure any tabs or alignment pins on the cover mate correctly with the bottom half of the air box. Re-engage all clips or reinstall the screws. If you loosened a hose clamp on the intake tube, tighten it now with your flathead screwdriver until snug, but do not overtighten.

Step 8: Reconnect Battery & Final Check

Reconnect the negative (black) battery terminal using your 10mm wrench or socket. Ensure all tools are clear of the engine bay. Double-check that all clips are secured, screws are tightened, and the intake tube is snug.

Step 9: Start the Engine

Start your 1987-2002 Ford Mazda Fiesta Probe 323 626 and listen for any unusual sounds. Take it for a short test drive. You should immediately notice improved throttle response and potentially a more aggressive engine note under acceleration. Enjoy your new performance!

If you encounter any issues or have questions, please refer to your vehicle’s service manual or contact our technical support team.