1. Introduction
This instruction manual provides essential information for the proper installation, operation, and maintenance of your DNA MOTORING EXA-CL-009 3-inch butt joint exhaust band clamp. Please read this manual thoroughly before installation to ensure safe and effective use. This clamp is designed to connect exhaust pipes without the need for welding, providing a secure and leak-free seal.
2. Product Overview and Features
The DNA MOTORING EXA-CL-009 is a high-quality 3-inch butt joint band clamp constructed from 304 stainless steel, offering durability and corrosion resistance for exhaust system repairs and modifications.

Image 2.1: The DNA MOTORING 3-inch butt joint exhaust band clamp.
Key Features:
- Material: Constructed with 304 Stainless Steel band for long-lasting durability and corrosion resistance.
- Dimensions: 3-inch Butt Joint Band Clamp, 3-inch ID Ends, 3-inch Overall Length, 10.9 Grade Bolts, 24 Gauge Wall Thickness.
- Universal Fitment: Designed to connect piping together without the need for welding.
- Easy Installation: Tighten or loosen bolts for connection or release.
- Arc Curved Design: Features an arc-curved face design for a tighter connection, providing a 360-degree seal.

Image 2.2: Diagram illustrating the components of the exhaust band clamp, including the 304 stainless steel band, nuts & bolts, steel gasket, and I-block design.
3. Specifications
| Specification | Detail |
|---|---|
| Model Number | EXA-CL-009 |
| Material | 304 Stainless Steel |
| Size (Inner Diameter) | 3.0 Inch |
| Overall Length | 3 Inches |
| Bolt Grade | 10.9 Grade |
| Wall Thickness | 24 Gauge |
| Item Weight | 0.4 Kilograms (approx. 14 ounces) |
| UPC | 194286150150 |

Image 3.1: Overall dimensions of the 3-inch butt joint exhaust band clamp.
4. Setup and Installation
Follow these steps for proper installation of the butt joint exhaust band clamp. Ensure the vehicle is safely supported and cooled before beginning any work on the exhaust system.
- Prepare Pipes: Ensure the ends of the exhaust pipes to be joined are clean, free of rust, debris, and any burrs. The pipes should have a 3-inch outer diameter (OD) to match the clamp's 3-inch inner diameter (ID).
- Align Pipes: Carefully align the two exhaust pipe sections that need to be connected. Ensure they are properly seated against each other to form a butt joint.
- Position Clamp: Slide the DNA MOTORING butt joint band clamp over the aligned pipe joint. Position the clamp so that the central I-block is directly over the seam where the two pipes meet. The arc-curved design of the clamp should wrap evenly around the pipes.
- Tighten Bolts: Using appropriate tools, gradually and evenly tighten the nuts on the clamp's bolts. Alternate between the nuts to ensure even pressure distribution across the clamp. This helps create a uniform 360-degree seal. Do not overtighten initially.
- Verify Seal: Once tightened, inspect the connection to ensure a secure and leak-free seal. Check for any gaps or uneven clamping. If necessary, further tighten the bolts evenly until a proper seal is achieved.

Image 4.1: The clamp positioned correctly over an exhaust pipe joint.

Image 4.2: Tightening the bolts on the exhaust clamp.
5. Operation
The DNA MOTORING butt joint exhaust band clamp operates by creating a strong, leak-proof seal between two exhaust pipes when its bolts are tightened. Once installed correctly, the clamp maintains the structural integrity of the exhaust system, preventing exhaust leaks and ensuring proper exhaust flow. No further operational steps are required after successful installation.
6. Maintenance
To ensure the longevity and continued performance of your DNA MOTORING exhaust band clamp, consider the following maintenance guidelines:
- Regular Inspection: Periodically inspect the clamp and the exhaust joint for any signs of loosening, corrosion, or exhaust leaks.
- Cleaning: While 304 stainless steel is corrosion-resistant, occasional cleaning to remove road grime and salt can help maintain its appearance and integrity.
- Retightening: If any loosening is detected during inspection, carefully retighten the bolts evenly to restore the secure seal.
- Avoid Damage: Protect the clamp from physical impact or damage during vehicle maintenance or off-road driving.
7. Troubleshooting
If you encounter issues with your exhaust band clamp, refer to the following common problems and solutions:
- Issue: Clamp does not provide a proper seal or fit.
Possible Cause: Incorrect clamp size for the pipe diameter, or pipes are not fully inserted/aligned.
Solution: Verify that the clamp's inner diameter (ID) precisely matches the outer diameter (OD) of the pipes being joined. Ensure the pipes are fully inserted into the clamp and aligned correctly before tightening. - Issue: Exhaust leak detected after installation.
Possible Cause: Insufficient tightening, uneven tightening, or improper pipe preparation.
Solution: Ensure bolts are tightened evenly and sufficiently to create a complete seal. Re-check pipe ends for burrs or debris that might prevent a tight fit. - Issue: Bolts snap during tightening.
Possible Cause: Overtightening or a defective bolt.
Solution: Tighten bolts evenly and gradually. Avoid using excessive force. If a bolt snaps, replace it with a high-grade equivalent (e.g., 10.9 grade) to ensure structural integrity.
8. Warranty Information
For specific warranty information regarding the DNA MOTORING EXA-CL-009 3-inch butt joint exhaust band clamp, please contact the seller directly. Warranty terms and conditions may vary.
9. Customer Support
If you require further assistance, have questions not covered in this manual, or need to report an issue, please contact DNA MOTORING customer support or the retailer from whom you purchased the product. Please have your model number (EXA-CL-009) and purchase details ready when contacting support.





