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Flowmaster 2.25IN (O)/OUT (C) 40 Series Muffler - 42441
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Flowmaster
SKU:
FLO42441
|
- UPC:
- 700042010295
- Availability:
- Regularly stocked product
$101.95
$114.95
(You save
$13.00
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Other Flowmaster kits for this car
Fits these vehicles
- 1986-1987 Buick RegalBase
- 1978-1980 Buick RegalBase
- 1986-1987 Buick RegalLimited
- 1978-1980 Buick RegalLimited
- 1987 Chevrolet CapriceBase
- 1986-1987 Chevrolet CapriceClassic
- 1974-1977 Chevrolet CapriceClassic
- 1986 Chevrolet CapriceClassic Brougham
- 1977 Chevrolet CapriceClassic Estate
- 1976-1977 Chevrolet CapriceClassic Landau
- 1975-1976 Chevrolet CapriceClassic Sport
- 1974 Chevrolet CapriceEstate
- 2010 Chevrolet CobaltBase
- 2005 Chevrolet CobaltBase
- 2005-2010 Chevrolet CobaltLS, LT
- 2006-2007 Chevrolet CobaltLTZ
- 2005-2010 Chevrolet CobaltSS
- 2008 Chevrolet CobaltSport
- 1985 Chevrolet ImpalaBase
- 1974-1977 Chevrolet ImpalaBase
- 1975-1977 Chevrolet ImpalaCustom
- 1976 Chevrolet ImpalaCustom Landau
- 1977 Chevrolet ImpalaLandau
- 1976 Chevrolet ImpalaS
- 2006-2007 Chevrolet ImpalaSS
- 1975-1976 Chevrolet ImpalaSport
- 1985-1988 Chevrolet Monte CarloBase
- 1986-1988 Chevrolet Monte CarloLS
- 2006-2007 Chevrolet Monte CarloSS
- 1985-1988 Chevrolet Monte CarloSS
- 1991 Chevrolet S10Baja
- 1983-1997 Chevrolet S10Base
- 1983-1990 Chevrolet S10Durango
- 1992-1993 Chevrolet S10EL
- 1994-1997 Chevrolet S10LS, SS
- 1983-1989 Chevrolet S10Sport
- 1983-1992 Chevrolet S10Tahoe
- 1994-1997 Chevrolet S10ZR2
- 1983-1994 Chevrolet S10 BlazerBase
- 1987-1989 Chevrolet S10 BlazerHigh Country
- 1994 Chevrolet S10 BlazerLT
- 1992 Chevrolet S10 BlazerSport
Part details
- Part number
- FLO42441
- Manufacturer part number
- 42441
- UPC
- 700042010295
- Brand
- Flowmaster
- Part type
- Muffler
- Instructions
- Installation instructions (PDF)
- Material
- Aluminized steel
Installation guide (from Flowmaster)
Hosted by Flowmaster. Follow the maker's instructions and torque specs.
- Box size:
- 10.10 × 4.60 × 19.30 (in)
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Complete the job
Read before you buy
-
-
Out of stock
-
Out of stock
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Out of stock
- Excellent Street/Strip and Off Road application
- Durable fully welded 16 gauge aluminized steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable interior resonance
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
40 Series - 2.25 Offset In / 2.25 Center Out - Aggressive Sound
Flowmaster 40 Series Chambered Muffler hallllo
- Excellent Street/Strip and Off Road application
- Durable fully welded 16 gauge aluminized steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable interior resonance
- Clearance Item:
- N
- LTL:
- N
- MPN:
- 42441
- Proposition 65:
- N
- Special Order:
- N
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Flowmaster
Flowmaster 2.25IN (O)/OUT (C) 40 Series Muffler - 42441
Flowmaster 2.25IN (O)/OUT (C) 40 Series Muffler - 42441 FAQ
It is listed for: 1986-1987 Buick Regal; 1978-1980 Buick Regal; 1986-1987 Buick Regal and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
The sound depends on the muffler and resonator design. A cat-back with a resonator stays closer to stock; an axle-back changes the tone more than the volume. Look for the maker's sound notes or a clip on this page.
Cat-back and axle-back systems bolt to the factory connection points. Headers and downpipes replace the factory pipe at the engine and may need new gaskets and hardware; see What's in the box.
A cat-back or axle-back needs no tune. Headers and downpipes change what the oxygen sensors see, so many cars need a tune or a sensor spacer to avoid a warning light.
Drone depends on the muffler and resonator design and your car's gearing. Systems with a resonator or an X-pipe drone less, and the maker notes when a system is built to be quiet at cruise.
An axle-back or cat-back is a jack-stands job with the right sockets and penetrating oil for rusty bolts. Headers and downpipes take more room and time, and a lift helps.
Most systems include the clamps and gaskets they need; see What's in the box. Reuse a factory gasket only if it is undamaged.
Yes — monthly options show right under the Add to Cart button. Affirm, Klarna, PayPal Pay Later and Snap Finance are offered at checkout, and checking what you qualify for does not affect your credit score.
Install and care: mufflers
Before you start
- Soak the factory flange bolts and hangers in penetrating oil the day before.
- Lay out the sections and clamps against What's in the box before anything goes under the car.
Do
- Hang the whole system loosely first, line it up, then tighten the clamps from the front back.
- Check for leaks at every joint with the engine running before the final tightening.
Don't
- Don't tighten any clamp fully until the whole system hangs straight.
- Don't reuse a crushed or torn factory gasket.