Product Overview
A 36-inch stainless steel gas cooktop with a front-center control panel featuring five burners.
The stainless steel gas cooktop with FlameSelect® achieves consistent cooking results thanks to nine precisely defined power levels.
Features & Benefits
- FlameSelect®: Allows for a precise adjustment of the flame size with nine defined power levels.
- Dual Flame Power Burner: Features two heat options, enabling quick boiling or precise simmering.
- Heavy-Duty Grates: Designed for easy and quick cleaning in the dishwasher.
- OptiSim® Burner: Ideal for simmering delicate sauces and melting chocolate without scorching.
- Low Profile Surface: The stainless steel cooking surface is easily accessible and simple to clean.
Specifications
General Properties
| Property | Detail |
|---|---|
| No. of burners | 5 |
| Knob color | Stainless steel appearance |
| Control location | Front-center |
| Sealed burners | Yes |
| Gas valves | Five 9-level step valves |
| Ignition system | Electric; thermocouple safety control |
| Cooktop surface material | Stainless steel |
| Grate material | Cast iron |
| Grate features | Continuous grates; dishwasher safe |
Element Performance (BTU)
| Element | Natural Gas (NG) / Liquid Propane (LP) |
|---|---|
| Total BTU load | 42,700 / 41,400 BTU |
| Front left burner (OptiSim®) | 3,400 / 3,400 BTU |
| Back left burner | 6,000 / 6,000 BTU |
| Center burner (Dual-flame) | 17,000 / 15,700 BTU |
| Back right burner | 10,300 / 10,300 BTU |
| Front right burner | 6,000 / 6,000 BTU |
Technical Details
| Detail | Specification |
|---|---|
| Circuit breaker | 15 A |
| Volts | 120 V |
| Frequency | 60 Hz |
| Plug type | 3-prong |
| Power cord length | 40" |
| Fuel type | Natural Gas (factory set) |
| Convertible to LP (kit required) | Yes |
Dimensions & Weight
| Dimension | Measurement |
|---|---|
| Overall appliance dimensions (HxWxD) | 2 23/64" x 36" x 20 1/2" |
| Required cutout size (HxWxD) | 1 1/4" x 33 1/2" x 19 5/16" |
| Minimum distance from counter front | 1 7/8" |
| Minimum distance from rear wall | 3" |
| Net weight | 42 lbs |
Accessories
Included
- LP conversion kit
- OptiSim® cap
Optional
- Wok ring (Model: HEZ298107)
Installation Details
The following diagrams and measurements provide essential information for installing the Bosch 36" Gas Cooktop (NGM8657UC).
Installation Above Wall Ovens
Diagram illustrating installation clearances for the cooktop when installed above a built-in wall oven. It shows specific measurements for the cooktop's depth from the back wall, height above the oven, and distances from the counter front and rear wall. A separate inset diagram details the gas line connection, labeling components such as the pressure regulator, flexible gas line, power cord, and gas supply line stub-out, indicating the direction of gas flow.
Installation in Cabinet or Kitchen Island
Diagram showing required clearances for installing the cooktop within a standard cabinet or a kitchen island. It specifies minimum dimensions from the left and right sides, depth from the back wall (including considerations for cabinet depth and combustible surfaces), and the distance from the front countertop edge.
Support & Warranty
For purchasing accessories, cleaners, or parts, visit www.bosch-home.com/us/store or call 1-800-944-2904 (Mon to Fri 5 am to 6 pm PST, Sat 6 am to 3 pm PST).
For more information on Bosch products, visit www.bosch-home.com/us or call 1-800-944-2904.
Notes: All height, width, and depth dimensions are shown in inches. BSH Home Appliances Corporation reserves the right to change product materials and specifications without notice. Consult the product's installation instructions for final dimensional data prior to making cutouts.
Warranties: Please refer to the Use & Care manual or the Bosch website for warranty details.
BSH Home Appliances Corporation. All rights reserved. Bosch is a registered trademark of Robert Bosch GmbH.
Document Version: 02/19








