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GM 25899161
Muffler

2003-2010 GM

Customer Questions & Expert Answers (8)
GM 25899161 Muffler
  • Part Description
    Muffler, Exhaust
  • Replaces
    15820139
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Vehicle Fitment

    Year Make Model Trim Engine
    2003-2010 Chevrolet Express 2500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2003-2010 Chevrolet Express 3500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2003-2010 GMC Savana 2500Base, LS, LT, SLE8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2003-2010 GMC Savana 3500Base, LS, LT, SLE8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Can you help me check if this 25899161 is the right part for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 25899161 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What are the torque specifications for the right catalytic converter clamp and the catalytic converter to muffler flange nuts for the 2008 Chevrolet Express 2500? Posted by Customer
    A:
    Tighten the right catalytic converter clamp to 54 N.m (40 lb ft) and the catalytic converter to muffler flange nuts to 48 N.m (35 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What is the procedure for a 4.3L engine for the 2003 Chevrolet Express 3500? Posted by Customer
    A:
    Remove the nuts retaining the catalytic converter pipe from the muffler flange.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What is the procedure for dual catalytic converter pipes for the 2010 Chevrolet Express 3500? Posted by Customer
    A:
    Loosen the clamp for the right catalytic converter and remove the nuts retaining the left catalytic converter to the muffler flange.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What is the first step for a 4.3L engine with a single catalytic converter pipe for the 2007 GMC Savana 3500? Posted by Customer
    A:
    Remove the nuts retaining the catalytic converter pipe from the muffler flange.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What is the next step after installing the insulators and gasket for the 2006 GMC Savana 2500? Posted by Customer
    A:
    Slide the muffler forward to connect it to the exhaust muffler pipe and install the insulators to the frame hangers.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    How should the nuts be installed during the exhaust pipe installation for the 2005 GMC Savana 2500? Posted by Customer
    A:
    Install the nuts for the muffler to the exhaust pipe and the nuts for the catalytic converter pipe to the exhaust pipe, tightening the flange nuts to 48 Nm (35 ft. lbs.).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What should be ensured before lowering for the 2009 GMC Savana 2500? Posted by Customer
    A:
    Ensure the exhaust system is properly aligned, tightening the right catalytic converter clamp to 54 Nm (40 lb ft) and the catalytic converter to muffler flange nuts to 48 Nm (35 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Muffler 25899161 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 25899161 Muffler is available in the market under the name GM Exhaust Pipe, Muffler. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 25899161 Muffler fits certain Chevrolet Express 2500, Express 3500 models, as well as GMC Savana 2500, Savana 3500 models.
The original GM component designated by manufacturer part number 25899161 maintains top performance when functioning as the Muffler, Exhaust unit. The component 25899161 is constructed from durable material and its dimensions span 164.3 x 39.0 x 15.8 inches while weighing 449.80 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 25899161 has available replacement options 15820139. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
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