1. Product Overview
The CTA Tools 7473 Adapter is a specialized tool designed to facilitate clean and efficient oil filling in various vehicle models. This red bayonet fitting adapter ensures a secure connection to the vehicle's oil filler neck, preventing spills during the oil change process. It is commonly used in conjunction with oil filling funnels.

Image 1: Top view of the CTA Tools 7473 Bayonet Oil Filling Adapter.
2. Safety Information
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Please handle with care and refer to local regulations for proper disposal.
3. What's in the Box
- One (1) CTA Tools 7473 Adapter with Bayonet Fitting (Red) for Oil Filling
4. Setup and Installation
- Inspect the Adapter: Before use, visually inspect the CTA Tools 7473 adapter for any signs of damage or wear. Ensure the bayonet fitting is clean and free of debris.
- Attach to Funnel: Securely attach the CTA Tools 7473 adapter to a compatible oil filling funnel. Ensure a tight seal to prevent leaks.
- Identify Vehicle Application: Consult the 'Application Chart' section to confirm compatibility with your specific vehicle make, model, and engine.
- Connect to Vehicle: Locate the vehicle's oil filler neck. Align the bayonet fitting of the adapter with the oil filler neck and twist to lock it securely in place. Ensure the adapter is firmly seated before proceeding.

Image 2: Side view of the CTA Tools 7473 Adapter, showing the bayonet fitting.
5. Operating Instructions
- Prepare for Oil Filling: With the adapter and funnel securely attached to the vehicle's oil filler neck, ensure the vehicle is on a level surface and the engine is cool.
- Pour Oil: Slowly pour the recommended engine oil into the funnel. The adapter will direct the oil into the engine without spillage.
- Monitor Oil Level: Periodically check the oil level using the vehicle's dipstick according to the vehicle manufacturer's instructions. Do not overfill.
- Remove Adapter: Once oil filling is complete and the correct level is achieved, twist the adapter counter-clockwise to unlock it from the oil filler neck. Carefully remove the adapter and funnel, allowing any residual oil to drain into the engine.
- Replace Oil Cap: Reinstall the vehicle's original oil filler cap securely.

Image 3: Example of an automotive specialty tool in use during engine maintenance.
6. Application Chart
Refer to the chart below for a comprehensive list of compatible vehicle makes, models, engines, and years for the CTA Tools 7473 Adapter.

Image 4: CTA Tools 7473 Adapter Application Chart.
7. Maintenance
After each use, clean the adapter with a suitable automotive cleaner to remove any oil residue. Store the adapter in a clean, dry place away from direct sunlight and extreme temperatures to prolong its lifespan.
8. Troubleshooting
Adapter Does Not Fit:
- Verify the vehicle's make, model, and engine against the 'Application Chart' to ensure compatibility.
- Ensure the oil filler neck is clean and free of obstructions.
- Confirm the adapter is correctly aligned with the bayonet fitting on the oil filler neck before twisting to lock.
Oil Leakage During Filling:
- Check that the adapter is securely attached to both the funnel and the vehicle's oil filler neck.
- Inspect the adapter's seals (if any) for damage or wear.
- Ensure the funnel is not overfilled, causing oil to back up.
9. Specifications
- Model Number: 7473
- Brand: CTA Tools
- Color: Red
- Item Weight: 2.39 ounces
- Package Dimensions: 2.5 x 2.25 x 1.75 inches
- Manufacturer Part Number: 7473
- ASIN: B01MRV04A8
- Date First Available: December 7, 2016
10. Warranty and Support
For warranty information or technical support, please refer to the official CTA Tools website or contact their customer service directly. Keep your purchase receipt for warranty claims.