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Photo of Muffler, Flowmaster, 50 Series, 3 Chamber
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Flowmaster

Muffler, Flowmaster, 50 Series, 3 Chamber

Vehicle Specific View fitment for 29 models
Part# 42553HP
Mfg# 942553
Sold As Each
$139.99

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List Price: $154.95
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Estimated the week of 1/13/2025
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OEM replacement

The three chamber design utilizes Flowmaster's Delta Flow® technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Body measures 17" x 9.75" with a 4" height and overall length is 23".

Features: Moderate Sound Improved Horsepower, Torque and Engine Efficiency Excellent choice for Street Rod cars and trucks Mild interior resonance

Notes

  • This item is not eligible for any further discounts or promotional pricing.
4
This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. Learn More

Find Item In These Catalogs

  • 2024 Cadillac 1936-1993 142
  • 2024 Chevelle, El Camino 64-77 391
  • 2024 Cutlass, F-85 & 442 61-77 256
  • 2024 GM G-Body 1978-1988 211
  • 2024 Grand Prix 1962-77 223
  • 2024 GTO, LeMans & Tempest 284
  • 2024 Monte Carlo 70-77 244
  • 2024 Riviera 1963-76 124
  • 2024 Skylark, GS & GSX 61-72 227
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National 50 Series (3 chamber) - 2-1/2" in/out
1984–1987 Buick Grand National 50 Series (3 chamber) - 2-1/2" in/out
1978–1987 Buick Regal 50 Series (3 chamber) - 2-1/2" in/out
1963–1976 Buick Riviera 50 Series (3 Chamber) - 2-1/2" in/out (3 chamber)
1961–1972 Buick Skylark 50 Series (3 Chamber) - 2-1/2" in/out
1983–1987 Buick T-Type 50 Series (3 chamber) - 2-1/2" in/out
1938–1953 Cadillac 60 Special 50 Series (3-chamber) - 2-1/2" in/out
1959–1993 Cadillac DeVille 50 Series (3-chamber) - 2-1/2" in/out
1953–1993 Cadillac Eldorado 50 Series (3-chamber) - 2-1/2" in/out
1954–1993 Cadillac Fleetwood 50 Series (3-chamber) - 2-1/2" in/out
1939–1951 Cadillac Series 60 50 Series (3-chamber) - 2-1/2" in/out
1939–1951 Cadillac Series 61 50 Series (3-chamber) - 2-1/2" in/out
1940–1964 Cadillac Series 62 50 Series (3-chamber) - 2-1/2" in/out
1939–1951 Cadillac Series 63 50 Series (3-chamber) - 2-1/2" in/out
1940–1964 Cadillac Series 65 50 Series (3-chamber) - 2-1/2" in/out
1936–1953 Cadillac Series 70 50 Series (3-chamber) - 2-1/2" in/out
1976–2004 Cadillac Seville  
1964–1977 Chevrolet Chevelle 50 Series (3 chamber) - 2-1/2" in/out
1960–1969 Chevrolet Corvair 50 Series (3 chamber) - 2-1/2" in/out
1961–1965 Chevrolet Corvair FC 50 Series (3 chamber) - 2-1/2" in/out
1964–1987 Chevrolet El Camino 1964–1977: 50 Series (3 chamber) - 2-1/2" in/out
1978–1987: 50 Series (3 chamber) - 2-1/2" in/out
1978–1983 Chevrolet Malibu 50 Series (3 chamber) - 2-1/2" in/out
1997–2022 Chevrolet Malibu  
1970–1988 Chevrolet Monte Carlo 1970–1977: 50 Series (3 Chamber) - 2-1/2" in/out
1978–1988: 50 Series (3 chamber) - 2-1/2" in/out
1961–1987 Oldsmobile Cutlass 1961–1977: 50 Series (3 Chamber) - 2-1/2" in/out
1978–1987: 50 Series (3 chamber) - 2-1/2" in/out
1958–1977 Pontiac Bonneville 50 Series (3 Chamber) - 2-1/2" in/out
1982–1986 Pontiac Bonneville 50 Series (3 chamber) - 2-1/2" in/out
1959–1977 Pontiac Catalina 50 Series (3 Chamber) - 2-1/2" in/out
1962–1987 Pontiac Grand Prix 1962–1977: 50 Series (3 Chamber) - 2-1/2" in/out
1978–1987: 50 Series (3 chamber) - 2-1/2" in/out
1964–1973 Pontiac GTO 50 Series (3 Chamber) - 2-1/2" in/out
1961–1974 Pontiac LeMans 1961–1973: 50 Series (3 Chamber) - 2-1/2" in/out
1961–1970 Pontiac Tempest 50 Series (3 Chamber) - 2-1/2" in/out
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Muffler, Flowmaster, 50 Series, 3 Chamber
Flowmaster Muffler, Flowmaster, 50 Series, 3 Chamber