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MagnaFlow California Grade Direct-Fit Catalytic Converter - Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD 6.0L 2003-2007

Magnaflow SKU: MAG4551479
Price
Regular price $1,520.00
Regular price Sale price $1,520.00
Only 1 Left – Order Soon
Shipping calculated at checkout.

Specifications

Type OEM-grade direct-fit catalytic converter
Emissions California Grade (CARB compliant, 50-state legal)
Material 409 stainless steel
Engine 6.0L
Part Number 4551479

This part fits:

Year Make Model Submodel
2003 Chevrolet Silverado 2500 HD Base
2003,2006 Chevrolet Silverado 2500 HD LS
2003,2006 Chevrolet Silverado 2500 HD LT
2003,2006 Chevrolet Silverado 2500 HD WT
2007 Chevrolet Silverado 2500 HD Classic LS
2007 Chevrolet Silverado 2500 HD Classic LT
2007 Chevrolet Silverado 2500 HD Classic WT
2003 GMC Sierra 2500 HD Base
2006 GMC Sierra 2500 HD SL
2003,2006 GMC Sierra 2500 HD SLE
2003,2006 GMC Sierra 2500 HD SLT
2003,2006 GMC Sierra 2500 HD WT
2007 GMC Sierra 2500 HD Classic SL
2007 GMC Sierra 2500 HD Classic SLE
2007 GMC Sierra 2500 HD Classic SLT
2007 GMC Sierra 2500 HD Classic WT

Shipping

  • In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Backordered items ship as soon as stock lands — contact us for lead times.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
  • Installed or used parts can’t be returned — confirm fitment before you install.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy

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