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GMC C25 Muffler

We have 3 Items In-stock. Select a year to continue.
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GMC C25 Muffler, Walker SoundFX Muffler - Natural, Aluminized Steel, Minor Modifications

$47.37 $68.14 You Save $20.77 (30%)
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Walker's SoundFX mufflers feature a sophisticated pipe routing and tuning technology that provides better flow and favorable OE-style sound. Their all-aluminized construction provides longer service life and quality appearance.

Features:
  • OE-style sound
  • Aluminized steel muffler material

Specifications:

  • 21 in. L x 9.75 in. W x 4.25 in. H, 26.5 in. overall length
  • Single offset inlet and offset outlet configuration
  • 2.5 in. inlet diameter
  • 2.25 in. outlet diameter
  • Oval body shape
  • Modifications and/or additional parts required
  • Sku#: WK17845
  • Brand: Walker
  • Series: Walker SoundFX
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Recommended Use: OE Replacement
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Fits the following GMC C25 Years

  • 1975-1978 | Base | 8 Cyl 5.7L
  • 1975-1978 | High Sierra | 8 Cyl 5.7L
  • 1975-1978 | Sierra Classic | 8 Cyl 5.7L
  • 1975-1978 | Sierra Grande | 8 Cyl 5.7L
  • 1978 | Base | 8 Cyl 5.0L
  • 1978 | High Sierra | 8 Cyl 5.0L
  • 1978 | Sierra Classic | 8 Cyl 5.0L
  • 1978 | Sierra Grande | 8 Cyl 5.0L
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GMC C25 Muffler, Heartthrob Exhaust Turbo Muffler - Natural, Aluminized Steel, Direct Fit new

$42.27 $49.88 You Save $7.61 (15%)
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Heartthrob Exhaust Turbo Universal Mufflers combine quiet performance with nice flow. They are double-wrapped and welded with two baffles and cores. The double wrapped shell provides a quieter sound than single-wrapped welded turbo mufflers.

Feature(s):

  • Mild sound
  • Reversible

Specifications:

  • Oval body shape
  • Single offset inlet and outlet configuration
  • 2.25 in. inlet diameter
  • 2.25 in. outlet diameter
  • Sku#: HEA437
  • Brand: Heartthrob Exhaust
  • Series: Heartthrob Exhaust Turbo
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Recommended Use: Performance
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Fits the following GMC C25 Years

  • 1975-1977 | Base | 8 Cyl 7.4L
  • 1975-1977 | High Sierra | 8 Cyl 7.4L
  • 1975-1977 | Sierra Classic | 8 Cyl 7.4L
  • 1975-1977 | Sierra Grande | 8 Cyl 7.4L
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GMC C25 Muffler, Gibson Superflow Muffler - Natural, Aluminized Steel, Universal

$90.61 $152.87 You Save $62.26 (41%)
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GIBSON – SUPERFLOW MUFFLERS

Gibson’s Superflow mufflers are dyno-proven to dramatically increase the performance of your low to mid-range RPMs due to their Convergent Flow technology and straight design that makes exhaust flow more efficiently. Gibson is known as the leading manufacturer of street-legal, high performance exhaust systems for trucks, SUVs, diesels, off-road vehicles and RVs.

  • Most reliable, trouble-free and affordable muffler available - period
  • Deep, rich big block sound outside and relatively quiet interior
  • Convergent Flow Technology means dramatically more efficient exhaust flow
  • Baffled and chambered design means optimal volumetric efficiency
  • Features straight design which improves exhaust flow to increase torque and horsepower
  • Dyno-tested
  • Direct fit by vehicle year, make and model
  • Made in America
  • Makes significant improvements in low to mid-range
  • Comes in universal oval, round or in a race muffler style
  • Sku#: G2755131
  • Brand: Gibson
  • Series: Gibson Superflow
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
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Fits the following GMC C25 Years

  • 1975-1978 | All Submodels | All Engines

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