Catalytic Converter for Cadillac ELR (2014-2016) 1.4L

Direct-Fit Manifold Catalytic Converter for 2014-2016 Cadillac ELR (Delta II)

What it Does: This direct-fit manifold catalytic converter replaces the factory exhaust manifold and catalyst on the 2014-2016 Cadillac ELR (Delta II) LUU 1.4L to restore emissions conversion and flow.

The Stock Cadillac ELR Exhaust Manifold Failure

On the Delta II chassis with the LUU 1.4L range-extender engine, the OEM catalytic converter is integrated into the exhaust manifold and endures severe thermal cycling during generator start-stop operation. Prolonged heat soak fractures the internal ceramic honeycomb substrate and degrades its precious-metal washcoat. Broken substrate pieces rattle inside the housing, choke exhaust flow, and trigger catalyst-efficiency fault codes like P0420.

Common Symptoms of a Failing OEM Converter

• Check Engine Light: Stored P0420 or P0430 DTCs from depleted catalyst oxygen storage.
• Exhaust Rattle: Metallic noise when the LUU 1.4L starts, signaling fractured ceramic substrate.
• Restricted Flow: Elevated backpressure, sluggish generator operation, and failed emissions inspections.

The Direct-Fit Stainless Exhaust Solution

This replacement pairs a rust-resistant stainless steel manifold body with a ceramic honeycomb substrate coated in precious metals to convert HC, CO, and NOx effectively. Factory-matched cylinder head, bracket, and outlet flanges ensure a bolt-on fit with no cutting or welding. Integrated pre- and post-catalyst oxygen sensor bungs preserve accurate LUU 1.4L ECU fuel-trim readings and restore quiet, federal EPA-compliant operation.

What's Included

• 1 x Manifold Catalytic Converter
• 1 x Outlet Flange Gasket
• Bolts, Nuts, and Washers

Technical Specifications

Compatibility

• 2014 Cadillac ELR Base (1.4L I4 Range-Extender)
• 2015 Cadillac ELR Base (1.4L I4 Range-Extender)
• 2016 Cadillac ELR Base (1.4L I4 Range-Extender)

Frequently Asked Questions & Fitment Warnings

Does this fit the Delta II ELR?

Yes. Fits 2014-2016 Cadillac ELR models equipped with the LUU 1.4L engine. Not CARB approved; illegal for sale or use in CA, NY, CO, or ME.

Will this clear P0420/P0430 codes, and are O2 sensors included?

Yes, if the converter failed. O2 sensors are excluded; transfer existing sensors or install new units and inspect for exhaust leaks.

Are gaskets and mounting hardware included for installation?

Partially. An outlet flange gasket and mounting hardware are included; install a new OE-style manifold gasket at the cylinder head.

The Cadillac Precision Standard

Built for strict OBD-II precision, this converter keeps your Delta II range-extender CEL-free. Stainless construction and OEM flanges ensure leak-free sealing under high thermal loads.