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Thumbnail Filmstrip of 2007.5-2018 6.7L Cummins Cold Weather Upgrade Kit Fleece FPE-CUMM-IAH-X2 Images
Fleece Performance Cold Weather Upgrade Kit – FPE-CUMM-IAH-X2 6.7L Cummins | 2007.5–2024 Ram 2500/3500/4500/5500
Take the cold-start reliability of your Fleece Performance Intake & Grid Heater Kit even further with this dedicated Cold Weather Upgrade Kit. The FPE-CUMM-IAH-X2 adds a second optimized 700W coil heating element that works in conjunction with the primary heater, delivering proven engine startability down to –31°F (–35°C).
Designed specifically for the Fleece high-flow intake horn, this secondary heater is strategically placed in the intake air stream for maximum heating efficiency. The dual-heater setup achieves extreme cold-start performance with lower total wattage and reduced strain on the grid heater relay compared to other dual-heater solutions on the market.
Key Benefits
- Adds a second 700W coil heater for dual-element heating
- Validated cold-start capability down to –31°F (–35°C)
- Optimized heater design and placement for efficient intake air heating
- Lower electrical load on the grid heater relay than competing dual-heater kits
- Simple bolt-on upgrade — approximately 30-minute install
Fitment
- Requires the Fleece Performance Intake and Grid Heater Kit (FPE-CUMM-IHK-0724 or equivalent)
- 2007.5–2024 Ram 2500 / 3500 / 4500 / 5500 with 6.7L Cummins
- Note: Dual-alternator trucks can only use the rear heater port
Kit Contents
- 700W coil heater
- High-flex heater power cable with protective boot
- Crush washer
- M5 lock nuts and necessary hardware
Cold Start Performance (Dual Heater Configuration)
| Sustained Temperature | Result |
|---|---|
| 32°F (0°C) | Pass (single heater sufficient) |
| 23°F (–5°C) | Pass (single heater sufficient) |
| 5°F (–15°C) | Pass (dual heater) |
| –13°F (–25°C) | Pass (dual heater) |
| –31°F (–35°C) | Pass (dual heater) |
Testing performed on a 2024 Ram 2500 with block heater in use, fully charged batteries, and Freedom Series 10W-30 synthetic oil.
Part Number: FPE-CUMM-IAH-X2 Warranty: 1-Year Limited Parts Warranty from Fleece Performance
Give your 6.7 Cummins the cold-weather confidence it deserves. Add the Fleece Cold Weather Upgrade Kit and start with authority no matter how low the temperature drops.
Fleece Performance Cold Weather Upgrade Kit – FPE-CUMM-IAH-X2 6.7L Cummins | 2007.5–2024 Ram 2500/3500/4500/5500
Take the cold-start reliability of your Fleece Performance Intake & Grid Heater Kit even further with this dedicated Cold Weather Upgrade Kit. The FPE-CUMM-IAH-X2 adds a second optimized 700W coil heating element that works in conjunction with the primary heater, delivering proven engine startability down to –31°F (–35°C).
Designed specifically for the Fleece high-flow intake horn, this secondary heater is strategically placed in the intake air stream for maximum heating efficiency. The dual-heater setup achieves extreme cold-start performance with lower total wattage and reduced strain on the grid heater relay compared to other dual-heater solutions on the market.
Key Benefits
Adds a second 700W coil heater for dual-element heating
Validated cold-start capability down to –31°F (–35°C)
Optimized heater design and placement for efficient intake air heating
Lower electrical load on the grid heater relay than competing dual-heater kits
Simple bolt-on upgrade — approximately 30-minute [...]
Fleece Performance Cold Weather Upgrade Kit – FPE-CUMM-IAH-X2 6.7L Cummins | 2007.5–2024 Ram 2500/3500/4500/5500
Take the cold-start reliability of your Fleece Performance Intake & Grid Heater Kit even further with this dedicated Cold Weather Upgrade Kit. The FPE-CUMM-IAH-X2 adds a second optimized 700W coil heating element that works in conjunction with the primary heater, delivering proven engine startability down to –31°F (–35°C).
Designed specifically for the Fleece high-flow intake horn, this secondary heater is strategically placed in the intake air stream for maximum heating efficiency. The dual-heater setup achieves extreme cold-start performance with lower total wattage and reduced strain on the grid heater relay compared to other dual-heater solutions on the market.
Key Benefits
- Adds a second 700W coil heater for dual-element heating
- Validated cold-start capability down to –31°F (–35°C)
- Optimized heater design and placement for efficient intake air heating
- Lower electrical load on the grid heater relay than competing dual-heater kits
- Simple bolt-on upgrade — approximately 30-minute install
Fitment
- Requires the Fleece Performance Intake and Grid Heater Kit (FPE-CUMM-IHK-0724 or equivalent)
- 2007.5–2024 Ram 2500 / 3500 / 4500 / 5500 with 6.7L Cummins
- Note: Dual-alternator trucks can only use the rear heater port
Kit Contents
- 700W coil heater
- High-flex heater power cable with protective boot
- Crush washer
- M5 lock nuts and necessary hardware
Cold Start Performance (Dual Heater Configuration)
| Sustained Temperature | Result |
|---|---|
| 32°F (0°C) | Pass (single heater sufficient) |
| 23°F (–5°C) | Pass (single heater sufficient) |
| 5°F (–15°C) | Pass (dual heater) |
| –13°F (–25°C) | Pass (dual heater) |
| –31°F (–35°C) | Pass (dual heater) |
Testing performed on a 2024 Ram 2500 with block heater in use, fully charged batteries, and Freedom Series 10W-30 synthetic oil.
Part Number: FPE-CUMM-IAH-X2 Warranty: 1-Year Limited Parts Warranty from Fleece Performance
Give your 6.7 Cummins the cold-weather confidence it deserves. Add the Fleece Cold Weather Upgrade Kit and start with authority no matter how low the temperature drops.