Walker Ultra Direct-Fit Catalytic Converters

4.43 out of 5 stars 388 Customer Reviews

Walker Ultra Direct-Fit catalytic converters fit like OE, because the company makes original equipment! Besides the perfect fit, inside the Ultra catalytic converters are ceramic substrates with high-tech washcoat and the right loading of precious metals. The outside bodies are stainless steel for long life and durability. Catalytic converters are a vital part of your vehicle's emission control system; choose the fit, quality, and performance of a Walker Ultra catalytic converter. Order the replacement model designed for your vehicle application.

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Walker Ultra Direct-Fit Catalytic Converters for 2004-2008 GRAND PRIX, 2005-2009 LACROSSE - 54752

Catalytic Converter, Ultra Direct Fit, Stainless Steel, Buick, Pontiac, 3.8L, Each

Part Number: WLK-54752

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Walker Ultra Direct-Fit Catalytic Converters for 2012-2016 LACROSSE - 16935

Ultra EPA Catalytic Converter

Part Number: WLK-16935

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 54772

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Buick, Chevrolet, GMC, Saab, Each

Part Number: WLK-54772

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2000-2005 BONNEVILLE, LESABRE, PARK AVENUE - 16386

Catalytic Converter, Stainless Steel Case, Buick, Pontiac, Each

Part Number: WLK-16386

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 16671

Catalytic Converter, Direct Fit, Stainless Steel Case, Buick, Chevy, GMC, Isuzu, Saab, Each

Part Number: WLK-16671

Not Yet Reviewed

Estimated Ship Date: Today

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Walker Ultra Direct-Fit Catalytic Converters 54981

Converter-EPA Ultra-Direct Fit

Part Number: WLK-54981

Not Yet Reviewed

Estimated Ship Date: Today

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Walker Ultra Direct-Fit Catalytic Converters 16710

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat Shield, Buick, Chevrolet, GMC, Saturn, Each

Part Number: WLK-16710

Not Yet Reviewed

Estimated Ship Date: Today

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Walker Ultra Direct-Fit Catalytic Converters for 2010-2012 LACROSSE - 55727

Ultra EPA Catalytic Converter

Part Number: WLK-55727

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2006-2008 LUCERNE - 52507

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat Shield, Buick, Each

Part Number: WLK-52507

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 54627

Catalytic Converter, Direct-Fit, Stainless Steel, Each

Part Number: WLK-54627

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 55587

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat Shield, Chevrolet, Pontiac, Saturn, Each

Part Number: WLK-55587

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2012-2017 VERANO - 54937

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Buick, Each

Part Number: WLK-54937

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2010-2016 LACROSSE - 16871

Ultra EPA Catalytic Converter

Part Number: WLK-16871

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2010-2011 LACROSSE - 16872

Ultra EPA Catalytic Converter

Part Number: WLK-16872

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2010-2016 LACROSSE - 16870

Ultra EPA Catalytic Converter

Part Number: WLK-16870

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2010-2011 LACROSSE - 16873

Ultra EPA Catalytic Converter

Part Number: WLK-16873

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters for 2007 RELAY, TERRAZA, 2007-2008 UPLANDER - 55620

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat shield, Buick, Chevrolet, Saturn, Each

Part Number: WLK-55620

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 16776

Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Buick, Each

Part Number: WLK-16776

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 54626

Catalytic Converter, Direct-Fit, Stainless Steel, Each

Part Number: WLK-54626

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Walker Ultra Direct-Fit Catalytic Converters 55476

Catalytic Converter, Direct-Fit, Stainless Steel, Each

Part Number: WLK-55476

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

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