Hardware AtlasSupplier reference Explore in 3D

AVIATION / Propulsion & fuel / REVIEWED 2026-09-11

B01Turbofan engines

Produce thrust with a fan and gas-turbine core.

Manufacturers & products

Compare a certified engine and its aircraft installation as one system. The illustrated NG-like jet uses the CFM56-7B as its program reference; newer and competing engines below explain the broader supply market.

Program applicability is stated for each listing. 737NG, 737 MAX, and other aircraft examples are distinct configurations; listed products are not automatically interchangeable or approved for installation.

manufacturer

CFM International

CFM56-7B / LEAP-1B

GE Aerospace and Safran joint venture offering the engine families for 737NG and 737MAX respectively. [1][3]

Program / application

737NG / CFM56-7B; 737MAX / LEAP-1B [1][3]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

The two engine families serve different 737 generations; neither is a drop-in replacement for the other.

View product & inquiry route

manufacturer

Pratt & Whitney

PW1100G-JM / GTF Advantage

Geared turbofan engines for the Airbus A320neo family, useful for comparing contemporary narrowbody propulsion architectures. [4]

Program / application

Other aircraft — not a 737 installation [4]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

No 737 installation. Advantage and original PW1100G-JM ratings differ.

View product & inquiry route

manufacturer

IAE International Aero Engines

V2500

Consortium engine program represented by Pratt & Whitney, with Japanese Aero Engines Corporation and MTU participation. [5]

Program / application

A320ceo family; not a 737 engine [5]

Custom program inquiry

Suggested route: manufacturer program/product inquiry or approved aftermarket support; confirm exact aircraft and part-number effectivity.

Product scope & qualifications

IAE overlaps with the partner companies listed elsewhere; it is not an additional independent manufacturing group.

View product & inquiry route

What remains unverified

Public sales pages do not publish comparable installed mission fuel maps or current part-level pricing.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

Approved airframe / engine variant
Begin with the certified combination and thrust rating; geometric similarity does not establish interchangeability.
Takeoff and climb thrust · lbf / kN
Compare altitude, temperature, flat-rating and bleed extraction at the same operating point.
Installed fuel consumption · fuel per mission
Use a common mission and installation; uninstalled engine claims cannot predict airline fuel use alone.
Fan and installation envelope · m / in
Diameter, nacelle, pylon and ground clearance constrain the aircraft configuration.
Bleed and electrical offtake · kg/s / kW
Account for cabin air, anti-ice, generators and their performance penalties.
Mass and center of gravity · kg
Clarify whether quoted mass includes fluids, nacelle, reverser or accessories.
Noise and emissions evidence
Match the measured condition and applicable certification configuration.
Lifecycle support
Compare approved spare modules, records, support agreements and repair capability.

Selection & integration notes

CFM identifies the CFM56-7B as exclusive to 737NG and LEAP-1B as the 737MAX engine.
This is a concentrated market: consortium partners and module makers are not independent complete-engine choices.

Supporting references [1][3]

Published product examples

4 REFERENCES

Specifications belong to the named product and configuration.

CFM56-7B — 737NGCFM International

Published thrust range: 18,500–27,300 lbf[2]2004 CFM56-7 overview; individual rating selection required.

Historical program data; request the exact current engine rating and build standard.

Example sources [1][2]

LEAP-1B — 737MAXCFM International

Maximum takeoff thrust: 28,000 lbf[3]Sea-level rating published by CFM.
Fan diameter: 69 in[3]LEAP-1B configuration.

MAX example; not the illustrated NG engine.

Example sources [3]

PW1100G-JM — A320neo familyPratt & Whitney

Thrust range: 24,000–33,000 lbf[4]PW1100G-JM; August 2025 card.
Fan diameter: 81 in[4]PW1100G-JM product card.
Bypass ratio: 12:1[4]Published nominal product ratio.

Do not substitute GTF Advantage’s higher upper thrust rating.

Example sources [4]

V2500 — A320ceo familyIAE International Aero Engines

Published upper thrust: 33,000 lbf[5]V2500 family maximum; variant selection required.

Other-airframe comparison; no 737 compatibility.

Example sources [5]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

CFM56-5B & CFM56-7B CFM International · Publication date not stated
CFM56-7B exclusive 737NG application and CFM joint venture.
Accessed 2026-09-10
CFM56-7 technology overview CFM International · Published 2004-07-18
Historical CFM56-7 thrust range, fan geometry and compressor stages.
Accessed 2026-09-10
LEAP engine family CFM International · Publication date not stated
LEAP-1B 737MAX application, takeoff thrust and fan diameter.
Accessed 2026-09-10
PW1100G-JM and GTF Advantage product card, updated 08.25 Pratt & Whitney · Published 2025-08
A320neo-family GTF thrust, fan diameter and bypass ratio.
Accessed 2026-09-10
V2500 commercial engine Pratt & Whitney · Publication date not stated
IAE partnership, A320ceo application and maximum thrust.
Accessed 2026-09-10