Catalytic Converter for BMW 750Li 750i (2006-2008) 4.8L Left & Right

Direct-Fit Replacement Catalytic Converter Set for 2006-2008 BMW 7 Series (E65/E66)

What it Does: The catalytic converter set replaces deteriorated factory manifolds and emissions units on 2006-2008 BMW 7 Series models to clear emissions fault codes, restore clean exhaust flow, and maintain factory backpressure levels.

The Stock BMW 7 Series Catalyst Degradation & Flow Restrictions

The aging factory exhaust system on the E65 and E66 chassis frequently suffers from catalyst washcoat thermal degradation and internal ceramic matrix breakdown. As the N62B48 4.8L naturally aspirated V8 accumulates mileage, sustained high exhaust gas temperatures and minor oil consumption degrade the OEM precious-metal substrates. This matrix breakdown triggers persistent P0420/P0430 DTCs, restricts post-manifold exhaust velocity, and causes elevated engine bay thermal load due to excessive exhaust backpressure.

The Engineering Solution

This left and right bank catalytic converter assembly features a high-grade stainless steel shell and direct-fit tubing engineered to withstand thermal cycling without cracking. Inside, an advanced ceramic substrate is coated with a high-efficiency precious metal washcoat to effectively convert hydrocarbons, carbon monoxide, and NOx into inert emissions. Laser-cut mounting flanges and pre-positioned, precision-threaded oxygen sensor bungs line up directly with factory downstream piping, eliminating the need for cutting or custom welding during install.

What's Included

• 2 × Direct-Fit Catalytic Converters (Left & Right Banks)
• Installation Accessories

Technical Specifications

Compatibility

• 2006 BMW 750i (4.8L V8 - Left & Right)
• 2006 BMW 750Li (4.8L V8 - Left & Right)
• 2007 BMW 750i (4.8L V8 - Left & Right)
• 2007 BMW 750Li (4.8L V8 - Left & Right)
• 2008 BMW 750i (4.8L V8 - Left & Right)
• 2008 BMW 750Li (4.8L V8 - Left & Right)

Frequently Asked Questions & Fitment Warnings

Does this fit the E65/E66 7 Series?

Yes, this is a direct fit for the 2006-2008 BMW 7 Series equipped with the N62B48 4.8L V8 engine. Note: This part is EPA 49-state/46-state compliant and cannot be shipped to or registered in California, New York, Colorado, or Maine.

Is an ECU flash or tune required after installation?

No tuning is required, as the direct-fit ceramic substrate and factory O2 sensor bung placement allow OEM secondary oxygen sensors to properly read catalyst efficiency without throwing false CEL codes.

The BMW Precision Standard

Engineered for high-output European V8 applications, these direct-fit converters match OE emissions flow rates and mounting geometry, ensuring reliable, CEL-free performance without sacrificing exhaust refinement.