Borla S-Type Cat-Back Exhaust System for 2012-2018 Jeep Wrangler JK Unlimited 4-Door 3.6L
Free gifts included with your order
- Guaranteed FitmentTeam-confirmed fit or money back
- No Sales TaxZero sales tax on every order
- 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund
Questions or a custom quote?
Mon to Fri, 9am to 5pm EST
Complete your upgrade
Fits the same truck
See it on a truck
Classic S-Type sound
T-304 stainless steel
Black Chrome version
Features
- Classic S-Type sound: Borla puts S-Type in the middle of its three sound levels: bolder than Touring and a little tamer than ATAK. Borla describes it as aggressive when you get on the throttle and more refined once you settle into a cruise.
- Starts behind the converters: A Cat-Back system takes over from the catalytic converters rearward and swaps the pipes, mufflers and tips that follow them. The factory converters are not touched and stay on the vehicle.
- Muffler tuned to the vehicle: Borla develops each system on the vehicle it is sold for, working out the muffler body, core layout and pipe routing around that engine, so the S-Type character suits the platform rather than a generic muffler.
- T-304 stainless steel: Every system in this family is built from T-304 austenitic stainless steel. Borla picks it over 409 and aluminized steel because it stands up far better to road salt, moisture and repeated heat cycles.
- Million-Mile Warranty: Borla covers the system against flaws in materials or workmanship for one million miles, for the original buyer on the vehicle it was first fitted to. Tip finishes, black coatings and carbon fiber carry a one-year term.
- Black Chrome version: This listing is 140479 with Borla's standard tip. The same system with a Black Chrome tip is part 140479BC, sold as its own listing.
Description & Fitment
Borla's S-Type cat-back 140479 is built for the 2012-2018 Jeep Wrangler JK Unlimited 4-door with the 3.6L V6 and 4WD, automatic or manual. It exits once at the rear through a 3.5" x 3.28" tip on 2.5" tubing. This listing is the standard-tip version; the Black Chrome version is 140479BC. Borla places S-Type between its mild Touring and loud ATAK sound levels; the build is T-304 stainless steel.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2012-2018 | Wrangler | JKU 4-door 3.6L V6; 4WD; auto or manual |
Check your fit: match your year, engine and doors to the fitment row: 2012-2018 Jeep Wrangler JK Unlimited 4-door, 3.6L V6, 4WD, auto or manual. Send us your VIN before ordering if anything on your vehicle differs.
Not for: the 2-door Wrangler, or the 2018+ JL. Black Chrome tip: 140479BC. Other S-Type cat-backs for the 4-door JK: 140634 (high-clearance Climber, turn-down outlet).
About Borla
Borla got its start in 1978 making stainless exhaust systems for concours Rolls-Royce and Ferrari restorations, and says the term Cat-Back began with it that same year. The company still builds in stainless steel, now at a 100-acre plant in Tennessee, and Borla says automakers including GM, Ford and Toyota use it for some of their factory-installed accessory exhaust.
Borla engineers each vehicle system from a clean sheet, shaping the muffler bodies, cores and pipe routing around that one platform, and offers many of its systems in three sound levels: Touring, S-Type and ATAK. For custom work it makes ProXS universal mufflers, CrateMufflers tuned to crate engines, exhaust tips, tubing, clamps and hangers.
Authorized Borla dealer. Prestige Truck is an authorized Borla dealer, so every Borla part we sell is new and genuine. Borla's Million-Mile Warranty is for the original purchaser, on the vehicle the part was first installed on. Keep your Prestige Truck order receipt: Borla asks for proof of the purchase date with any claim, and we use it when we take a claim to Borla for you.
Frequently Asked Questions
Will this fit my 2012-2018 Wrangler Unlimited 3.6L?
It does when your Jeep is a JK Unlimited 4-door with the 3.6L V6 and 4WD, automatic or manual. If anything differs, send us your VIN before ordering.
How is this different from 140479BC?
It is the same Borla system for the same Jeep. 140479BC comes with a Black Chrome tip; this listing, 140479, is the standard-tip version. The photo shows the Black Chrome tip.
How does S-Type compare with Touring and ATAK?
Borla ranks its three sound levels with Touring the mildest, ATAK the loudest and S-Type between them. S-Type turns aggressive under throttle and calms to a smoother note at a steady cruise.
Do the catalytic converters stay in place?
Yes. A Cat-Back system begins behind the catalytic converters, so the factory converters stay on the vehicle and only the exhaust after them is replaced.
Do I need a shop to install it?
Borla's install sheets for these systems recommend an exhaust shop or professional installer, and they warn against air impact tools. Many also suggest a second person to hold the system up while it is hung. Some vehicles need the factory pipe cut; the Installation section on each product says whether yours does.
Can I send it back if I don't like the sound?
Borla does not warrant sound level, because how an exhaust sounds is a personal call, and it asks owners not to return a part for that reason. Settle on the sound level before you order. Borla notes that venturis, available from a retailer, can quiet a system later. For any other return question, contact us before you ship anything back.
Installation
Here's the short version. Follow Borla's install sheet (below) for your vehicle's exact steps.
- Lubricate all hangers and rubber brackets.
- Loosen clamp on rear muffler assembly. Remove the two hangers located on the rubber brackets and remove this assembly from vehicle.
- Loosen clamp on front muffler assembly. Remove the two hangers located on the front muffler assembly from the rubber brackets and remove this assembly from vehicle.
- Place a clamp over the front pipe.
- Insert the expanded-end of the front muffler assembly into pipe. Insert hangers into rubber isolators. Lightly tighten clamp.
- Check underbody clearance and tip alignment.
Stuck on a step?
Specifications
| Brand | Borla |
|---|---|
| Part Number | 140479 |
| Product Type | Cat-Back exhaust system |
| Sound Level | S-Type (Borla's middle level) |
| Starts At | Behind the catalytic converters |
| Material | T-304 stainless steel |
| Tips | 3.5" x 3.28" square rolled angle-cut |
| Layout | Single rear exit |
| Pipe | 2.5" |
| Finish | Standard (the Black Chrome version is 140479BC) |
| UPC | 808422404792 |
Warranty, shipping & returns
-
Warranty
Borla's Million-Mile Warranty covers this part for one million miles against flaws in its materials or workmanship.- Coverage belongs to the original purchaser of record, on the vehicle the part was first installed on.
- Black coatings, tip finishes, carbon fiber and moving parts such as valves and actuators carry a one-year term. Blemishes or marring caused by weather, road hazards, lack of maintenance or extreme heat or cold are not covered.
- Borla inspects the returned part, and when it finds a manufacturing or material defect it repairs or replaces the part, at Borla's option.
- Sound level is not warranted, since sound is a matter of taste. Borla notes that venturis can be fitted to quiet a system.
- Universal mufflers must be joined at their inlet and outlet necks. Welding to the case shell or end caps voids the warranty.
- Not covered: the cost of removal or reinstallation; damage from accident, abuse, misuse or misapplication; parts that are modified or used for something other than their intended purpose; racing products, and street parts used for racing.
- To claim, contact us first with your order number and a short description of the problem. Borla asks for proof of the retail purchase date, and your Prestige Truck receipt is that proof. A part sent back to Borla travels with freight prepaid by the sender, packed well, since Borla cannot accept parts damaged in transit.
- Some states do not allow these limits, so your rights may vary by state.
-
Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
-
Inspect on delivery
This system ships in a large carton: lay every pipe, muffler, clamp and hanger out against the install sheet's parts list before you start, and photograph any dents or scuffed tips right away. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
-
30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.