BMW 735i Catalytic Converter Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(2)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(2)

Catalytic Converter Replacement Service

How much does a Catalytic Converter Replacement cost?

On average, the cost for a BMW 735i Catalytic Converter Replacement is $886 with $763 for parts and $123 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1985 BMW 735iL6-3.5LService typeCatalytic Converter ReplacementEstimate$3471.63Shop/Dealer Price$4324.92 - $6833.59
1986 BMW 735iL6-3.5LService typeCatalytic Converter ReplacementEstimate$3445.63Shop/Dealer Price$4298.96 - $6807.66
1987 BMW 735iL6-3.5LService typeCatalytic Converter ReplacementEstimate$1649.37Shop/Dealer Price$2053.63 - $3215.13
1989 BMW 735iL6-3.5LService typeCatalytic Converter ReplacementEstimate$1649.37Shop/Dealer Price$2053.58 - $3215.04
1988 BMW 735iL6-3.5LService typeCatalytic Converter ReplacementEstimate$3011.75Shop/Dealer Price$3756.64 - $5939.95
Show example BMW 735i Catalytic Converter Replacement prices

What is the Catalytic Converter all about?

The catalytic converter is an emissions related component that is mounted in the exhaust pipe. Its purpose is to superheat unburned particles in the exhaust gases that are expelled from the engine. As the engine runs, the catalytic converter warms up to an operating temperature of 500-1200 °F. At this temperature the particles in the ‘dirty’ exhaust are burned and converted into water vapor and carbon dioxide. The catalyst inside is nearly always comprised of precious metals such as platinum, rhodium, or palladium. When the catalyst isn’t able to burn off the unburned hydrocarbons in the exhaust, an unpleasant odor can occur, a rough run or misfire may be felt, or the Check Engine light may illuminate.

Keep in mind:

  • Most cars will require the aftermarket Catalytic Converter to be welded to the exhaust pipes. Mobile mechanics can only do this service if you have a direct fit catalytic converter bought from a dealer.
  • When replacing the catalytic converter, it may be necessary to replace oxygen sensors as well.
  • Catalytic converter symptoms are often similar to other more straightforward issues. Get the Check Engine light diagnosed anytime it illuminates.

How it's done:

  • The vehicle is raised and supported on jack stands
  • The defective catalytic converter is removed
  • The new catalytic converter is installed and the vehicle is started to check for any leaks
  • The vehicle is lowered off the jack stands
  • The vehicle is road tested for proper operation

Our recommendation:

If you are consistently taking short trips with your vehicle, the catalytic converter may not be getting hot enough to completely burn away the hydrocarbons. To prevent the catalytic converter from getting clogged, take your vehicle for the occasional drive on the highway for 15 minutes. This allows the exhaust to sufficiently heat up and burn off any deposits in the catalytic converter.

What common symptoms indicate you may need to replace the Catalytic Converter?

  • Check engine light is on or flashing
  • Car has little or no power
  • Smell of rotten eggs inside the car or out of the exhaust
  • Poor fuel economy
  • Backfiring and rough running

How important is this service?

If the catalytic converter isn’t operating efficiently, the check engine light will come on and your engine can begin to lose performance. If the catalytic converter becomes plugged, the engine light will begin to flash and your engine may stall or no longer start. In extreme cases where the converter is plugged, the excess back pressure created can actually cause internal engine damage. If you are experiencing symptoms related to catalytic converter failure, get it checked soon.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(2)

Rating Summary
2
0
0
0
0
2
0
0
0
0

Chris

22 years of experience
2247 reviews
Chris
22 years of experience
BMW 735i L6-3.5L - Brake Master Cylinder - San Juan Capistrano, California
Chris was punctual and professional. Very efficient and knowledgeable. Work was done in the manner that I expected. Good mechanic...

Zave

17 years of experience
41 reviews
Zave
17 years of experience
BMW 325i L6-2.5L - Catalytic Converter - Charlotte, North Carolina
Thanks

Charles

17 years of experience
176 reviews
Charles
17 years of experience
BMW X5 V8-4.4L - Catalytic Converter - Washington, District of Columbia
He arrived on time and finished the job in a timely manner. I'm very pleased with the work he did and his knowledge and professionalism. A great mechanic.

Chris

16 years of experience
18 reviews
Chris
16 years of experience
BMW M6 V8-4.4L Turbo - Pre-purchase Car Inspection - Dallas, Texas
Did a great pre-purchase inspection, and pointed out the things i asked from him and the stuff i missed too.

Excellent Rating

(2)

Rating Summary
2
0
0
0
0
2
0
0
0
0
Number of BMW Catalytic Converter Replacement services completed
22+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

3 Essential Things to Know About Trailer Hitches
A A trailer hitch is also known as a tow hitch, and is used to pull a vehicle, boat, or other things behind a vehicle. There are different classes of trailer hitches depending on the type of vehicle you have....
P2032 OBD-II Trouble Code: Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 1 Sensor 2
P2032 P2032 code definition Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 1 Sensor 2 What the P2032 code means This code indicates there is a problem with the catalytic converter or the system that monitors the efficiency of...
The Best Tool for Mechanics Working on Cars With Limited Clearance Areas
Automotive technician jobs require tool sets that allow mechanics to reach tight spaces. Craftsman has a handy low clearance ratchet and socket set.

How do I manually adjust the front seats in a 2012 Chevrolet Cruze?

If your vehicle is equipped with manually adjustable seats, then you can adjust your seat in either two or three directions, depending on your model. To pull the seat forward or push it back, pull the handle that is located...

I bought a bolt on exhaust system do you guys do installation?

I would first recommend you contact our customer service so they can check to see if this service can be done in your area. Some services like exhaust work may not be able to be done in your area or...

My Denali will not turn off

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com