Two-door removable-top 4x4 SUV · 2.5L AMC inline-four
1998 Jeep Wrangler — 2.5L AMC inline-four, AX-5-speed manual (2.5L)
The 1998 factory powertrain material identifies this two-door removable-top 4x4 suv 2.5L AMC inline-four and AX-5 5-speed manual (2.5L) pairing.

Photo: “1998 Jeep Wrangler (TJ) Sahara Soft-Top.jpg” by Guywelch2000 / Wikimedia Commons, licensed under CC BY-SA 4.0. Cropped to 16:9.
Factory configuration
What this model is
- Trim
- Wrangler
- Body style
- Two-door removable-top 4x4 SUV
- Engine
- 2.5L AMC inline-four
- Transmission
- AX-5 5-speed manual (2.5L)
United States factory powertrain/body pairing. Appearance and equipment packages that do not change this identity are not duplicated here.
Configuration-specific ownership
Maintenance for this exact configuration
These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.
Service desk
What this car needs & when
Use this as a service-planning checklist for 1998 Jeep Wrangler — 2.5L AMC inline-four, AX-5-speed manual (2.5L). Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.
- Service topics
- 3
- Factory intervals
- 3
- Fitment-scoped
- 3
- Exact references
- 2
Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.
Engine oil and filter
Exact reference available
Published service schedule
Source: Operation CHARM — 1998 Jeep Wrangler 4WD L4-150 2.5L VIN P MFI normal-service schedule · 7,500-mile normal-service row and its repeating mileage rows · checked
Cataloged oil-filter fitment
Baldwin lists B34 for both cataloged Wrangler engines; this establishes fitment only, not a service interval.
Source: Baldwin Filters — 2017 Automotive Applications catalog · Printed catalog page 346, Jeep 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six row — Lube — B34 · checked
Verified ordering references
- Validated equivalentBaldwin B34
Qty. 1 · Spin-on engine lubricating-oil filter · catalog-listed
Cataloged for the 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six; confirm VIN and installed engine before ordering.
Catalog: Baldwin Filters — 2017 Automotive Applications catalog · Printed catalog page 346, Jeep 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six row — Lube — B34 · checked
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Spark plugs
Sourced interval available
Source: Operation CHARM — 1998 Jeep Wrangler 4WD L4-150 2.5L VIN P MFI normal-service schedule · 30,000-mile normal-service row and repeating replacement rows · checked
Engine air filter
Exact reference available
Published service schedule
Source: Operation CHARM — 1998 Jeep Wrangler 4WD L4-150 2.5L VIN P MFI normal-service schedule · 30,000-mile normal-service row and repeating replacement rows · checked
Cataloged engine-air-filter fitment
Baldwin lists PA4092 for both cataloged Wrangler engines; this establishes fitment only, not a service interval.
Source: Baldwin Filters — 2017 Automotive Applications catalog · Printed catalog page 346, Jeep 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six row — Air — PA4092 · checked
Verified ordering references
- Validated equivalentBaldwin PA4092
Qty. 1 · Engine air-filter element · catalog-listed
Cataloged for the 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six; confirm VIN and installed engine before ordering.
Catalog: Baldwin Filters — 2017 Automotive Applications catalog · Printed catalog page 346, Jeep 1998 Wrangler 2.5L AMC inline-four / 4.0L AMC inline-six row — Air — PA4092 · checked
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Sources
Other 1998 configurations