Wirthco
WirthCo 21049 Circuit and Spark Plug Tester 21049_68
- SKU:
- 18790372
- MPN:
- 21049_68
- Availability:
- Usually ships the same or next business day. In stock at our CA, GA, KS, MI, PA warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 02/15/2026 11:24:25 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $16.05 each 16.05 |
| Buy 3 | and pay only $14.57 each 14.57 |
| Buy 4 | and pay only $13.78 each 13.78 |
| Buy 5 - 9 | and pay only $13.31 each 13.31 |
| Buy 10 or above | and pay only $12.07 each 12.07 |
- Stock Update:
- 02/15/2026 11:24:25 AM PST
Description
This item is brand-new, factory sealed.
WirthCo 21049 Battery Doctor Circuit and Spark Plug Tester- Instantly locates bad connections, faulty or broken wires and sockets
- High quality tester for 12 Volt - 24 Volt systems
- Light shines if battery or circuit is sound
- Light will not shine for short circuit or low battery
- Includes alligator ground clip, full 45 inch lead wire and cap
- Manufacturer: WirthCo
- Brand: WirthCo
- Model: 21049
- Item Weight: 2.4 ounces
- Product Dimensions: 10.4 x 2.5 x 1.1 inches
- Country of Origin: Taiwan
- Item model number: 0306.1088
- Manufacturer Part Number: 0306.1088
- OEM Part Number: 21049
WirthCo Battery Doctor Circuit and Spark Plug Tester is designed to instantly locate wiring problems such as bad connections, faulty or broken wires and sockets in 12 Volt - 24 Volt systems. A light will shine if the battery or circuit's condition is sound. No light will be visible if there is a short circuit or the battery is low. This high quality tester includes an alligator ground clip and 3 inch metal probe with cover. The overall length is 8 inches with a full 45 inch lead wire. WirthCo has been a prime manufacturer of practical products for making life easier and safer. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
Warranty Information
