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Quick answer
For a 7.3L Power Stroke diesel, pick a pack whose maker rates it for at least a 7.3L diesel, and preferably 8.0L. The NOCO Boost X GBX155 (4,250A, up to 10.0L gas / 8.0L diesel) is our top pick because that official rating covers the engine. The GOOLOO GT4000S is the lower-cost alternative, with a more generous maker's claim of 12.0L gas / 10.0L diesel. The Clore Jump-N-Carry JNC660 is the shop and farm pick, with the important caveat that its listing does not state an engine-size rating. The NOCO GB70 is not a match for the diesel 7.3, because NOCO rates it only to 6.0L diesel.
Specs from Amazon.com listings and maker pages, checked 15 November 2026. We don't list prices because they change; check today's price on Amazon. Badges: Best Overall is the pick we'd buy first for the job this guide covers; Best Value is the lower-tier model that still covers the main job (judged on specs and its place in the maker's line-up, not on a listed price); Best Premium is the top-tier model here, with the highest rating or extra capability.
"7.3" in a Ford truck is two different engines, and they should not share a buying guide blindly.
The 7.3L Power Stroke is the diesel V8 used in Super Duty and E-Series trucks from the mid-1990s into the early 2000s (roughly the 1994.5–2003 years). It is a 7.3-liter diesel, so a jump pack rated only to 6.0L diesel is undersized on the maker's own scale.
The later 7.3L Godzilla is a gasoline V8 used in newer Super Duty, chassis-cab and some van applications. It is not a Power Stroke. A pack rated for 8.0L gas, such as the NOCO GB70, can cover that gas engine even though the same pack is only rated to 6.0L diesel.
This guide is for the diesel 7.3 Power Stroke. For 6.6L Duramax, 6.7L Cummins and 6.7L Power Stroke trucks, see our diesel truck jump starter guide. For a GB40 vs GB70 vs GBX155 breakdown, see the NOCO size comparison.
Full spec comparison (specs from manufacturer/Amazon listings; no prices shown)
We used published engine ratings and peak-current figures from each product's Amazon.com listing, checked in the US view on 15 November 2026. We didn't test these packs on a 7.3 Power Stroke, and we don't list prices. Peak-amp numbers are not measured the same way across brands, so we treat engine-size ratings as the more useful comparison, and we label generous claims as the maker's own. Read how we research.
We did not pick the NOCO GB70 (ASIN B016UG6PWE) for this diesel engine: NOCO rates it for diesels up to 6.0L and gas up to 8.0L. That makes the GB70 a possible size for a 7.3 Godzilla gas engine, not for a 7.3 Power Stroke diesel. We also skipped packs whose diesel ratings stop at 6.0L or 6.5L.
Specs: Amazon.com listing (checked 15 November 2026). Pros and cons summarise the listed specs; we didn't test it. ASIN B000JFJLP6.
Why the GBX155 covers a 7.3 diesel
NOCO rates the Boost X GBX155 at 4,250A, up to 10.0L gas and 8.0L diesel, with up to 18 starts per charge. A 7.3L diesel sits inside that diesel rating, with some headroom for cold weather. The same pack is our heavy-duty pick in the diesel truck guide.
The GOOLOO GT4000S listing claims 4,000A and engines up to 12.0L gas / 10.0L diesel, plus up to 60 starts per charge, 100W two-way charging and a 3.2-inch screen. Those engine and start-count figures are the maker's claims. They are high enough on paper for a 7.3 diesel, which is why it is the value pick, but they are not a NOCO-style rating we can treat as equivalent.
The Clore JNC660 is a 1,700A sealed lead-acid pack (22Ah) with 46-inch #2 AWG cables and a built-in voltmeter. Shops and farms often prefer this style because it can live on a charger. The listing does not give an engine-size rating, so we are not claiming it is officially sized for a 7.3 diesel. If you want a stated diesel-liter rating, choose the GBX155 or, with the claim caveat, the GT4000S.
Some listings advertise even higher peak-amp numbers, such as the OXILAM 6000A pack (maker's claim: all gas / up to 12L diesel). We are not making it a pick here. Peak-amp figures are easy to inflate, and a newer brand's claim is a thinner reason to jump a 7.3 diesel than a stated 8.0L diesel rating from NOCO.
Practical notes for a 7.3 Power Stroke
Wait for the glow-plug light to go out before you crank.
Crank in short bursts and let the pack rest between attempts.
On dual-battery trucks, connect to the battery or jump posts your owner's manual names.
Keep a lithium pack warm in deep cold; the lead-acid JNC660 is the more traditional unheated-shop option, at the cost of weight.
Recharge after use, and every few months in storage.
FAQ
Will a NOCO GB70 start a 7.3 Power Stroke?
Not if you follow NOCO's own diesel rating. The GB70 is rated for diesels up to 6.0L. A 7.3L Power Stroke is above that. The GBX155, rated to 8.0L diesel, is the NOCO pack that covers it. The GB70's 8.0L gas rating is relevant to the later 7.3 Godzilla, not to the Power Stroke diesel.
Is a 7.3 Power Stroke the same as a 7.3 Godzilla?
No. The Power Stroke 7.3 is a diesel from the 1990s–early 2000s. The Godzilla 7.3 is a later gasoline V8. Size the pack to the fuel type and the maker's engine rating.
Do I need 4,000A or is engine rating more important?
Engine rating is the clearer published figure for this job, because brands do not measure "peak amps" the same way. We still show the listed peak-current numbers so you can see what each maker claims.
Can I use a 2-in-1 jump starter with a compressor?
Only if its diesel rating covers 7.3L. Some combo packs stop at 6.5L diesel. For this engine we would rather use a dedicated pack, and keep a separate compressor from our truck tire inflator guide if you also want air.