L13 Series 2 AWG – 2/0 AWG Silicone Terminal Boots Fits M10 & M12 Studs
P/N: L13 Series
The L13 Series fits large wire diameters up to 13mm (approx. 2 AWG – 2/0 AWG) and accommodates large battery lugs and M10 (3/8″) to M12 (1/2″) studs.
Available in Standard L-Shape and Flexible V-Type (Fishtail) designs. Ideal for high-amperage automotive, marine battery banks, and solar inverter connections.
Model Selection Specifications
| Model No. | Shape | Wire Entry | Cap Inner Dia. | Total Length | Features |
| L13-19-69 | Standard L-Shape | 13mm (2-2/0 AWG) | 19 mm | 69 mm | Standard Fit for M10 |
| L13-25-56 | V-Type (Fishtail) | 13mm (2-2/0 AWG) | 25 mm | 56 mm | Wide Opening / Flexible |
| L13-27-83 | Large L-Shape | 13mm (2-2/0 AWG) | 27 mm | 83 mm | Large Cap for M12 |
Key Features & Benefits
- Secure Fit for 2 AWG – 2/0 AWG Large Cables
The 13mm wire entry is designed to create a robust, moisture-proof seal around large gauge cables ranging from 2 AWG to 2/0 AWG. This tight fit prevents short circuits and corrosion on main power feeds and high-current battery bank connections.
- Specialized V-Type & L-Shape Designs
The unique “V-Type” (Fishtail) design of Model L13-25-56 features a wide, flexible opening for easy installation over irregular-shaped lugs or crowded busbars. The standard L-Shape models (L13-19-69 and L13-27-83) provide classic protection for standard 90-degree terminal connections.
- High-Temp Flame Retardant Silicone Material
The flame-retardant silicone construction provides excellent thermal stability with a working temperature range of -40°C to +230°C. This durable material resists melting or cracking in high-heat engine bays and meets strict safety standards, unlike standard PVC or rubber covers.
- Large Cap Capacity for M10 & M12 Studs
The large cap inner diameters (19mm to 27mm) easily accommodate bulky mounting hardware, including M10 (3/8″) and M12 (1/2″) studs. This spacious design fits over heavy-duty crimp lugs used in marine, automotive, and solar setups.
- Color-Coded for Safety & Identification
The Red and Black color options allow for clear visual identification of Positive (+) and Negative (-) polarity. The optional Orange color (L13-25-56 only) provides high-visibility warning, making it ideal for EV (Electric Vehicle) and high-voltage solar systems.
Application Gallery
![]()
![]()
Typical installation on industrial machinery and marine battery banks.
If you have any questions about the product or would like more information, we encourage you to contact us via email at sales1@chinadaier.com or through our live chat. We are here to help you and give you the information you need.


