Direct: (503) 987-4002
Main: (503) 987-4000





The Espar AS3 D2L is a genuine Eberspächer diesel air heater with a high-quality factory wiring harness — not a grey-market unit or a knockoff. It runs off your van's main diesel fuel tank, draws only 4–27W of electrical power, and operates effectively up to 13,120 ft (4,000 m) with the included altitude sensor. For Sprinter and ProMaster van builds, this is the clean, reliable heating solution that seasoned builders reach for.
| Dimensions (H × L × W) | 4.8" × 12.2" × 4.52" |
| Weight | 5.5 lbs (2.5 kg) |
| Heat Output | 7,500 BTU (2.2 kW) |
| Operating Voltage | 12V DC |
| Power Consumption | 4–27W |
| Fuel Type | Diesel |
| Fuel Consumption | 0.04–0.07 gal/hr (0.14–0.26 L/hr) |
| Altitude Compensation | Up to 13,120 ft (4,000 m) |
| Startup Draw | ~30A for first 1–2 minutes (glow plugs) |
Espar Camper Van Fuel Installation Guide
Espar AS3 B2L/D2L Install Instructions
Espar AS3 B2L/D2L Operating Instructions
Espar AS3 B2L/D2L Technical Sheet
Espar AS3 B2L/D2L Troubleshooting Guide
Espar AS3 B2L/D2L Spare Parts List
Easy Start Pro Controller Guide
We ship nationwide and internationally. Most in-stock items leave our shop within 1–3 business days. Made-to-order and oversized parts may require additional lead time; any special timing will be noted on the product page.
If an order is placed outside of our normal business hours (Monday–Friday), we will process it as soon as possible once our team is back in the shop during regular operating hours. Weekend orders will be handled the next business day.
We want you stoked on your gear. Eligible items may be returned within 30 days of delivery for a refund or exchange.
Many products include a manufacturer warranty. We’re happy to help facilitate claims—reach out with your order number, photos, and a description of the issue.
Questions about shipping or returns? Get in touch—our team is here to help you get trail-ready.
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