Price Match Guarantee 
Free Shipping
MagnaFlow Sys C/B Toyota 4-Runner 03 - 15781
This wheel on real customer builds
See this part on video
Made by our team · tap a video to play it
📧 Get Fitment Help
Verify parts fit & get product recommendations
Magnaflow
SKU:
MAG15781
|
- UPC:
- 841380005618
- Availability:
- Regularly stocked product
$1,049.00
$1,507.12
(You save
$458.12
)
Other Magnaflow kits for this car
Fits these vehicles
Fitment not listed for this part yet — call or text 813-535-5801 and we will confirm it for your car.
Part details
- Part number
- MAG15781
- Manufacturer part number
- 15781
- UPC
- 841380005618
- Brand
- Magnaflow
- Box size:
- 15.50 × 12.00 × 57.00 (in)
Finance it — pay over time
Bad credit or no credit? No problem. Lease-to-own with Snap Finance: no credit needed, approvals up to $5,000, as low as /week. Get started
Low monthly payments
Affirm, Klarna or PayPal Pay Later: see your exact plan at checkout. Checking won’t affect your credit score.
Bad credit or no credit? No problem. Lease-to-own with Snap Finance: no credit needed, approvals up to $5,000, as low as /week. Get started
- Affirm
- Klarna
- PayPal Pay Later
- Snap Finance
📧 Get Fitment Help
Verify parts fit & get product recommendations
Complete the job
Read before you buy
-
-
-
Only 2 left in stock
-
The MagnaFlow 2003-2009 Toyota 4Runner Street Series Cat-Back Performance Exhaust System 15781 brings out the personality of your 4.0L, 4.7L 2003-2009 Toyota 4Runner with our signature resonant, powerful engine tone and dyno-proven performance. Thanks to its fast-flowing, mandrel bent 2.5in. main piping and 1 Straight-Through mufflers ending in a Dual Same Side Behind Passenger Rear Tire exit with 3 x 3.75in. Polished Welded-On Double Wall Straight Cut Rolled Edge tips, this Toyota 4Runner exhaust kit has the performance chops to match its sporty sound and appearance. Upgrade your ride to the next level with an exhaust that has the pipes to put other Toyota 4Runner's to shame. With this system your vehicle will be producing Moderate exterior and Mild interior sound levels while leaving other cars and trucks feeling envious at every stoplight. Exhaust kit 15781 features a cat-back layout that replaces your ride's stock exhaust components from near the catalytic converter on back. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15781 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow's 1-year limited finish warranty and limited lifetime construction warranty.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2009 | Toyota | 4Runner | Limited |
| 2003-2009 | Toyota | 4Runner | Sport |
| 2003-2009 | Toyota | 4Runner | SR5 |
- Clearance Item:
- N
- LTL:
- N
- MPN:
- 15781
- Proposition 65:
- N
- Special Order:
- N
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review
Magnaflow
MagnaFlow Sys C/B Toyota 4-Runner 03 - 15781
MagnaFlow Sys C/B Toyota 4-Runner 03 - 15781 FAQ
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: cat-back exhaust
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.