1998 Hummer H1 Ignition Parts

Our catalog currently lists 5 ignition parts for the 1998 Hummer H1 across 1 subcategory and 5 brands, covering both the 6.5L V8 DIESEL and the 6.5L V8 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.

Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1998 Hummer H1 was originally sold in the US, the safest choice is a part marked for the US market.

First match the engine — each row shows which engine(s) the part fits. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.