Flowmaster 2 IN(C)/OUT(C) 40 Series DF Muffler - 942040
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- UPC:
- 700042015375
- 1991-1993 Acura LegendBase
- 1994-1995 Acura LegendGS
- 1991-1995 Acura LegendL, LS
- 1995 Acura LegendSE
- 1992-2000 Honda CivicCX, DX, EX
- 1998-2000 Honda CivicGX
- 1996-2000 Honda CivicHX
- 1992-2000 Honda CivicLX
- 1999-2000 Honda CivicSi
- 1992-1995 Honda CivicSi, VX
- 1999 Honda CivicValue Package
- 1997-2001 Honda PreludeBase
- 1992-1996 Honda PreludeS
- 1995 Honda PreludeSE
- 1992-1996 Honda PreludeSi
- 1992-1994 Honda PreludeSi 4WS
- 1997-2001 Honda PreludeType SH
- 1986-1993 Toyota CelicaGT, GTS, ST
- 1998-2000 Toyota TacomaPre Runner
- 2000 Toyota TacomaSR5
- Part number
- FLO942040
- Manufacturer part number
- 942040
- UPC
- 700042015375
- Brand
- Flowmaster
- Part type
- Muffler
- Special order
- Yes — ordered in for you; allow extra time
- Instructions
- Installation instructions (PDF)
- Material
- Aluminized steel
Installation guide (from Flowmaster)
Hosted by Flowmaster. Follow the maker's instructions and torque specs.
- Box size:
- 9.90 × 4.40 × 20.80 (in)
Complete the job
Read before you buy
This two chamber design incorporates Flowmaster's Delta Flow® technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
40 Delta Flow® - 2.00 Center In / 2.00 Center Out - Aggressive Sound
Flowmaster 40 Series Delta Flow Chambered Muffler
- Excellent Street/Strip and Off Road application
- Durable fully welded 16 gauge aluminized steel
- Race proven Delta Flow technology
- No internal packing to blowout
- Clearance Item:
- N
- LTL:
- N
- MPN:
- 942040
- Proposition 65:
- N
- Special Order:
- Y
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Flowmaster
Flowmaster 2 IN(C)/OUT(C) 40 Series DF Muffler - 942040
Flowmaster 2 IN(C)/OUT(C) 40 Series DF Muffler - 942040 FAQ
It is listed for: 1991-1993 Acura Legend; 1994-1995 Acura Legend; 1991-1995 Acura Legend 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.
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