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| Brand | EVIL ENERGY |
| Product Type | Ignition Coils |
| OEM Replacement | UF271 |
| Spark Energy | 111mJ |
| Spark Duration | 2.331 mS |
| Maximum Voltage | 50000V |
| Primary Resistance | 0.97 ohms |
| Secondary Resistance | 6.24k ohms |
| Turns Ratio | 86 |
| Model | Year | Engine |
| Escalade | 2003-2006 | 6.0L V8 |
| Model | Year | Engine |
| Avalanche 1500 | 2006 | 5.3L V8 |
| Avalanche 2500 | 2003-2006 | 8.1L V8 |
| Silverado 1500 | 1999-2006 | 4.8L V8 |
| Silverado 1500 | 2006 | 5.3L V8 |
| Silverado 1500 | 2004-2006 | 6.0L V8 |
| Silverado 1500 HD | 2001-2006 | 6.0L V8 |
| Silverado 2500 | 1999-2004 | 6.0L V8 |
| Silverado 2500 HD | 2001-2006 | 6.0L V8 |
| Silverado 2500 HD | 2003-2006 | 8.1L V8 |
| Silverado 3500 | 2001-2006 | 6.0L V8 |
| Silverado 3500 | 2003-2006 | 8.1L V8 |
| Suburban 1500 | 2006 | 6.0L V8 |
| Suburban 2500 | 2000-2006 | 6.0L V8 |
| Suburban 2500 | 2003 | 8.1L V8 |
| Tahoe | 2000-2006 | 4.8L V8 |
| Tahoe | 2006 | 5.3L V8 |
| Model | Year | Engine |
| Sierra 1500 | 1999-2006 | 4.8L V8 |
| Sierra 1500 | 2006 | 5.3L V8 |
| Sierra 1500 | 2005 | 6.0L V8 |
| Sierra 1500 HD | 2001-2006 | 6.0L V8 |
| Sierra 2500 | 1999-2004 | 6.0L V8 |
| Sierra 2500 HD | 2001-2006 | 6.0L V8 |
| Sierra 2500 HD | 2003-2006 | 8.1L V8 |
| Sierra 3500 | 2001-2006 | 6.0L V8 |
| Sierra 3500 | 2003-2006 | 8.1L V8 |
| Yukon | 2000-2006 | 4.8L V8 |
| Yukon | 2005-2006 | 5.3L V8 |
| Yukon | 2001 | 6.0L V8 |
| Yukon XL 1500 | 2006 | 5.3L V8 |
| Yukon XL 1500 | 2001-2006 | 6.0L V8 |
| Yukon XL 2500 | 2000-2006 | 6.0L V8 |
| Yukon XL 2500 | 2003 | 8.1L V8 |
| Model | Year | Engine |
| H2 | 2003-2006 | 6.0L V8 |
Need to replace OE UF271? EVIL ENERGY high‑performance ignition coils deliver stronger ignition and improved durability. Straight plug‑and‑play installation boosts power and efficiency for daily driving or mild builds.

Engineered for superior combustion efficiency and an enhanced driving experience, EVIL ENERGY ignition coils deliver a perfect balance of performance, reliability, and durability for your engine.
Boost Power & Fast Ignition - Provides quick ignition response and strong combustion, increasing horsepower, sharpening throttle response, and improving overall engine performance.
Reduce Jitter & Rough Idle - Effectively minimizes engine vibration, shaking, and uneven idling, ensuring smoother acceleration and stable operation.
Reduce Fuel Consumption - Improves fuel atomization and ignition efficiency, reducing fuel waste while enhancing overall fuel economy.
High-Temperature Resistant - Constructed with high-quality heat-resistant materials to endure extreme engine temperatures and maintain stable performance.
Stable & Durable - Built with robust structure and dependable design for extended lifespan and consistent ignition reliability in daily and performance use.


Solve Ignition & Running Issues
Targets no-start conditions, unexpected vehicle vibration, illuminated fault lights, and high fuel usage for stable performance.


| Policy | Details |
|---|---|
| Cancellation Policy | Orders can be canceled within 48 hours of placement. Refund processed in 3-5 business days. |
| Returns Policy | Returns accepted within 180 days. Full refund within 90 days; 15% fee for 90-180 days. |
| Non-Returnable Items | Only regular-priced items are eligible for refunds; sale items are non-refundable. |
| Refund Processing | If no refund received, check your bank/credit card. For ongoing issues, contact support@ievilenergy.com. |
Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.
EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.
If you need further information or assistance, feel free to ask!
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