The Chrysler EC3 is a 3,604 cc, 60‑degree V6 petrol engine produced between 2012 and 2018. It features an aluminium block and heads, dual overhead camshafts (DOHC), and variable valve timing (VVT) on both intake and exhaust camshafts. This configuration delivers smooth, responsive power, with outputs typically rated at 220 kW (296 PS) and 353 Nm of torque.
Fitted to the Chrysler 200, Dodge Dart, and Jeep Cherokee, the EC3 engine was engineered for a blend of everyday drivability and spirited performance in compact and mid-size applications. Emissions compliance for its production period was achieved through precise electronic fuel injection and dual VVT, meeting stringent Euro 5 standards.
One documented engineering update addressed potential oil cooler line fitting leaks in early production units. Chrysler Service Bulletin 13‑008‑15 recommended revised O-ring material and installation procedures to improve sealing integrity, a modification implemented on engines produced after August 2015.
Chrysler
Production years 2012–2018 meet Euro 5 standards for applicable markets (VCA UK Type Approval #VCA/EMS/5681).
The Chrysler EC3 is a 3,604 cc 60-degree V6 petrol engine engineered for compact and mid-size sedans and SUVs (2012-2018). It combines DOHC with dual variable valve timing to deliver strong, linear power and refined operation. Designed to meet Euro 5 standards, it offers a compelling mix of performance and efficiency for its class.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,604 cc | |
| Fuel type | Petrol | |
| Configuration | 60° V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 96.0 mm × 83.0 mm | |
| Power output | 220 kW (296 PS) @ 6,400 rpm | |
| Torque | 353 Nm @ 4,800 rpm | |
| Fuel system | Sequential multi-port fuel injection (SFI) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.2:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven (dual primary chains) | |
| Oil type | Chrysler MS-6395 (SAE 5W-20) | |
| Dry weight | 182 kg |
The dual VVT system provides excellent throttle response and fuel efficiency but requires strict adherence to 8,000-10,000 km oil change intervals using the specified 5W-20 viscosity to ensure proper phaser operation. The dual primary timing chains are generally robust, but tensioner wear can occur; listen for a rattle on cold start. Early production engines (pre-SIB 13-008-15) may be prone to oil cooler line fitting leaks; inspect for seepage at the block fittings. Fuel injectors can develop deposits over time; periodic cleaning is recommended.
Oil Specs: Requires Chrysler specification MS-6395 (5W-20) (Chrysler Owner's Manual 2013). Critical for VVT operation.
Emissions: Euro 5 certification applies to all 2012–2018 EC3 engines for EU/UK markets (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under SAE J1349 standards. Ratings apply to standard tune (Chrysler TIS Doc. V6-36L-03).
Chrysler Technical Information System (TIS): Docs V6-36L-03, SIB 13-008-15
VCA Type Approval Database (VCA/EMS/5681)
SAE International: J1349 Engine Power Certification Standards
The Chrysler EC3 was used across Chrysler's PF and KL platforms with transverse mounting. This engine received platform-specific adaptations-including unique engine mounts and accessory drive layouts for the 200 versus the Cherokee-but remained largely consistent mechanically. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the left (driver's side) cylinder block, just below the cylinder head deck surface (Chrysler TIS V6-36L-03). The 8th VIN digit for EC3-equipped vehicles is typically 'G'. Visually, the engine is identifiable by its large, cast aluminium intake manifold and the "Pentastar" logo on the plastic engine cover. Critical differentiation from the earlier EZB engine: EC3 features minor ECU and emissions calibrations for improved efficiency in transverse applications, but shares the same core architecture. The presence of VVT solenoids on both the front and rear of the cylinder heads confirms the dual VVT system.
The EC3's primary reliability focus is on the variable valve timing (VVT) system and associated oil pressure, with elevated incidence in vehicles subjected to infrequent oil changes. Chrysler internal service data indicates VVT solenoid or phaser issues are a leading cause of check engine lights in high-mileage examples, while oil sludge buildup can exacerbate timing chain tensioner wear. Maintaining strict oil change intervals with the correct specification is critical.
Analysis derived from Chrysler technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CHRYSLER EC3.
Comprehensive technical documentation and regulatory references
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CHRYSLER Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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