Impco F450/F550
Built: 2017 · Series: Other models
More machines from model year 2017
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
IMPCO – other heavy-duty road engines: the collective page of CNG conversions of Ford's Triton petrol engines for E-450, F-450/550, F-650/750 and Step-Van chassis, 257 to 265 hp, natural-gas fuelled
IMPCO is a US alternative-fuel specialist that converts petrol engines to run on compressed natural gas (CNG) or LPG. The units listed here are based on Ford's Triton engine family – the 6.0-litre V8 and the 6.8-litre V10 – and power Ford commercial chassis in the E-450, F-450/550 and F-650/750 series, along with the Step-Van bodies built on them for delivery and shuttle services. Model designations such as 6.0 BCNG or 6.0 DCNG indicate displacement and fuel variant.
Read on 3 more paragraphs
The register lists here seven versions with 257 to 265 hp rated power at 4,000 to 5,000 rpm. All seven run sequential gas injection; five are pure CNG units, one a dual-fuel engine for CNG or petrol, one entered generically as a natural-gas engine. Certified model years are 2013 to 2017. Maximum torque ranges from 300 to 355 Nm at 3,800 to 4,750 rpm.
CNG conversions like these are aimed mainly at municipal and commercial fleets – shuttle buses, delivery vehicles, in-plant transport – seeking lower emissions and steadier fuel costs than diesel, without giving up the well-established Ford chassis base; IMPCO thus competes alongside other alternative-drive converters in the North American medium-duty commercial vehicle market.
When buying a used CNG vehicle, the inspection date and condition of the gas tanks matter most, since they are subject to periodic pressure testing; also check the condition of the sequential gas injectors, the ignition system and, given the higher combustion temperatures of natural gas, the cooling system. Before buying, check that the gas system is approved for the relevant US state.
Sources: SpecCodex register, model data: IMPCO (weitere Heavy-Duty-Straßenmotoren)
Technical data
Engine
| Engine code | G6.8DC6correct |
|---|---|
| Engine family | HZ9XE06.8DC6correct |
| Engine families | HZ9XE06.8DC6correct |
| Fuel | Compressed Natural Gascorrect |
| Rated output | 191.6 kW (= 257 hp)correct |
| Rated speed | 4,000 rpmcorrect |
| Maximum torque | 355 ft·lbfcorrect |
| Speed at max. torque | 4,000 rpmcorrect |
| Displacement | 6,800 cm³correct |
| Displacement | 6.8 lcorrect |
| Operating cycle | petrol enginecorrect |
| Injection | sequential injectioncorrect |
| Aspiration | naturally aspiratedcorrect |
Origin and approval
| Version | G6.8DC6correct |
|---|---|
| Built from | 2017correct |
| Built to | 2017correct |
| Model year from | 2017correct |
| Model year to | 2017correct |
Other data
| Application | Vocationalcorrect |
|---|
Frequently asked questions
How much power does the Impco F450/F550 have?
The Impco F450/F550 delivers 192 kW.
What engine does the Impco F450/F550 have?
6,800 cm³ displacement, Compressed Natural Gas.
When was the Impco F450/F550 built?
Production years: 2017.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 22 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: US EPA — engine certification data (retrieved August 2026) · How we check the data
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