The Chrysler 3.5L EGH is a 3,518 cc, 60-degree V6 petrol engine produced between 1998 and 2003. It features an aluminum block and heads, single overhead camshafts (SOHC) per bank, and 24 valves. This iteration delivered 200–253 hp, utilizing sequential multi-port fuel injection for optimal power and smoothness.
Fitted to models such as the Chrysler 300M, Concorde, LHS, and Dodge Intrepid, the EGH was engineered for refined, powerful performance and quiet operation in Chrysler's flagship sedans. Emissions compliance for North American markets was achieved through a dual exhaust system with catalytic converters, meeting US Federal Tier 1 standards.
A documented service concern involves premature failure of the water pump, which is driven by the timing belt and located internally. This issue, addressed in Chrysler Technical Service Bulletin 07-15-99, can lead to coolant leakage into the oil sump, causing potential engine damage if not detected early.
Production years 1998–2003 meet US Federal Tier 1 emissions standards (EPA Certification #AID-98-01).
The Chrysler 3.5L EGH is a 3,518 cc V6 petrol engine engineered for full-size sedans (1998-2003). It combines SOHC 24-valve architecture with sequential multi-port fuel injection to deliver smooth, linear power. Designed to meet US Federal Tier 1 emissions standards, it prioritizes refinement and adequate power for highway cruising.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,518 cc | |
| Fuel type | Petrol | |
| Configuration | 60° V6, SOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 96.0 mm × 81.0 mm | |
| Power output | 200–253 hp (149–189 kW) @ 6,400 rpm | |
| Torque | 221–255 lb-ft (300–346 Nm) @ 3,950 rpm | |
| Fuel system | Sequential multi-port fuel injection (SFI) | |
| Emissions standard | US Federal Tier 1 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven | |
| Oil type | API SH 5W-30 | |
| Dry weight | Unavailable |
The naturally aspirated V6 offers smooth, linear power delivery ideal for relaxed highway cruising but lacks the low-end grunt of later V8s. Strict adherence to the 60,000-mile timing belt replacement interval is critical, as failure will cause catastrophic interference engine damage and often destroys the internally-mounted water pump. The documented water pump failure necessitates vigilance for coolant contamination in oil; replacement with the updated water pump assembly per TSB 07-15-99 is recommended during timing belt service. Regular oil changes with the specified 5W-30 viscosity are essential for longevity.
Oil Specs: Requires API SH 5W-30 specification (Chrysler Service Manual 98-03). Supersedes earlier SG requirements.
Emissions: US Federal Tier 1 certification applies to all 1998-2003 EGH engines (EPA Certification #AID-98-01).
Power Ratings: Measured under SAE J1349 standards (Chrysler Group Service Manual 98-03). Output varies by model application.
Chrysler Technical Service Bulletin (TSB): 07-15-99
Chrysler Electronic Parts Catalog (ETK): Doc. P4897210AB
Chrysler Group Service Manual (1998-2003)
US Environmental Protection Agency (EPA) Certification Database: #AID-98-01
The Chrysler 3.5L EGH was used across Chrysler's LH platform with longitudinal mounting. This engine received minor platform-specific adaptations for hood clearance and accessory mounting. All applications are documented in OEM service manuals.
Locate the engine code stamped on a flat pad on the front of the left cylinder bank, near the timing cover (Chrysler Service Manual 98-03). The 8th digit of the VIN will be 'H' for vehicles equipped with the 3.5L SOHC V6 engine. The EGH is visually distinguished from the earlier 3.3L V6 by its larger displacement and different intake manifold design. Critical differentiation from the 3.5L DOHC (EGJ): EGH has a single camshaft per bank. Service parts for the EGH are generally interchangeable across all LH platform applications from 1998-2003, though intake manifolds may vary by model.
The EGH's primary reliability risk is internal water pump failure, with elevated incidence as mileage increases. Chrysler TSB 07-15-99 documents this as a known concern, while owner reports frequently cite coolant contamination in oil as a precursor to engine failure. Neglecting the timing belt service interval accelerates pump wear, making proactive replacement critical.
Analysis derived from Chrysler technical bulletins (1998-2003) and owner-reported failure data (1998-2023). Repair procedures should follow manufacturer guidelines.
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