The Exclusive Engine on the 737 MAXWide moat

GE Aerospace (GE) — moat facet

The only engine available on the best-selling aircraft in the world, and no second aircraft if it stumbles.

The LEAP-1B is the only engine available on the Boeing 737 MAX1. There is no competing option, no dual-source arrangement, and no way for an airline that wants the aircraft to buy a different powerplant.

LEAP deliveries2023202420252026 targetA Boeing and Airbus production statistic as much as a GE Aerospace one.
Sole source on the best-selling aircraft in the world, and no second aircraft if it stumbles.

That is the most valuable single position in commercial aviation and the most concentrated. Every 737 MAX built creates two LEAP engines and, behind them, twenty-five years of overhaul and spare-parts revenue that belongs to CFM and therefore to GE Aerospace and Safran. Boeing's production rate is, quite literally, GE Aerospace's narrowbody delivery rate.

It is also a dependency on a single airframer's execution. The 737 MAX programme has spent the last several years constrained by certification, regulatory oversight and production-rate limits, and none of those constraints was within GE Aerospace's power to influence. When the aircraft is not built, the engine is not delivered, and the aftermarket that would have followed simply does not exist.

The company's own framing of the timescale explains why it accepts the risk: commercial and financial dynamics for major engine platforms play out over many years, development cycles are long, and after initial sale engines operate for decades with services in the aftermarket2. A sole-source position is won once and held for a generation. Sharing an aircraft means competing on price at every order.

The balance elsewhere in the portfolio is what makes this tolerable. CFM holds more than fifty-five per cent of the A320neo family alongside Pratt & Whitney3, the GE9X is sole source on the Boeing 777X, and GEnx, CF6 and GE90 cover the widebody fleet4.

Follow LEAP deliveries: 1,570 in 2023, 1,407 in 2024, 1,802 in 20255, with around 2,000 targeted for 20266 and deliveries up forty-one per cent in the first half7. That series is a Boeing and Airbus production statistic as much as a GE Aerospace one.

Moat trajectory: Widening

LEAP deliveries are ramping hard — 1,802 in 2025, around 2,000 targeted for 2026, first-half deliveries up forty-one per cent — and every one is a 737 MAX or A320neo family aircraft that will be serviced for twenty-five years. The exclusivity is not improvable; the volume through it is.

The number that tests this moat
Reported
LEAP deliveries growth, first half of 2026
+41%

With no alternative engine on the 737 MAX, Boeing's production rate becomes GE's narrowbody delivery rate. Growth slowing would most likely mean the airframers slowed.

Source: GE Aerospace Q2 2026 earnings release ↗
⚠ Threats to the moat
⚠ THREAT 01
Exclusive on One Airframe Is a Bet on That Airframe
Exclusivity removes the competition and replaces it with a single point of failure.
References
  1. Third-party estimateThe LEAP-1B is the only engine available on the Boeing 737 MAX.
    Aviation and market coverage of GE Aerospace's narrowbody position and delivery ramp - the LEAP as the exclusive powerplant on the Boeing 737 MAX and holding more than 55% of the Airbus A320neo family through the CFM joint venture, the target of about 2,000 LEAP deliveries in 2026, first-half deliveries up 41%, and CFM RISE described as a technology demonstrator rather than a product for sale. — 2026 · publ. August 2026 · source ↗
  2. ReportedThe company's own framing of the timescale explains why it accepts the risk: commercial and financial dynamics for major engine platforms play out over many years, development cycles are long, and after initial sale engines operate for decades with services in the aftermarket.
    GE Aerospace Form 10-K, FY2025 - Item 1 Business — segment descriptions for Commercial Engines & Services and Defense & Propulsion Technologies, the CFM International 50-50 non-consolidated joint venture with Safran Aircraft Engines, the commercial engine platforms (LEAP, CFM56, GEnx, GE9X, CF6, GE90), the defence platforms (F110, F404, F414, T408, T700, T901, LM2500), the Propulsion & Additive Technologies brands, the CFM RISE programme, the customer description including airframers and sole-source positions, and the segment revenue and services shares. — FY2025 · publ. January 2026 · source ↗
  3. Third-party estimateCFM holds more than fifty-five per cent of the A320neo family alongside Pratt & Whitney, the GE9X is sole source on the Boeing 777X, and GEnx, CF6 and GE90 cover the widebody fleet.
    Aviation and market coverage of GE Aerospace's narrowbody position and delivery ramp - the LEAP as the exclusive powerplant on the Boeing 737 MAX and holding more than 55% of the Airbus A320neo family through the CFM joint venture, the target of about 2,000 LEAP deliveries in 2026, first-half deliveries up 41%, and CFM RISE described as a technology demonstrator rather than a product for sale. — 2026 · publ. August 2026 · source ↗
  4. ReportedCFM holds more than fifty-five per cent of the A320neo family alongside Pratt & Whitney, the GE9X is sole source on the Boeing 777X, and GEnx, CF6 and GE90 cover the widebody fleet.
    GE Aerospace Form 10-K, FY2025 - Item 1 Business — segment descriptions for Commercial Engines & Services and Defense & Propulsion Technologies, the CFM International 50-50 non-consolidated joint venture with Safran Aircraft Engines, the commercial engine platforms (LEAP, CFM56, GEnx, GE9X, CF6, GE90), the defence platforms (F110, F404, F414, T408, T700, T901, LM2500), the Propulsion & Additive Technologies brands, the CFM RISE programme, the customer description including airframers and sole-source positions, and the segment revenue and services shares. — FY2025 · publ. January 2026 · source ↗
  5. ReportedFollow LEAP deliveries: 1,570 in 2023, 1,407 in 2024, 1,802 in 2025, with around 2,000 targeted for 2026 and deliveries up forty-one per cent in the first half.
    GE Aerospace Form 10-K, FY2025 - Segment Operations — Commercial Engines & Services: segment revenue, profit and margin, commercial engine and LEAP unit deliveries, internal shop visit revenue growth, the CES remaining performance obligation, the 2025 engine commitments from Qatar Airways, Emirates, International Airlines Group, ANA Holdings, Malaysia Aviation Group, Korean Air, Cathay Pacific and Pegasus, and commercial departures growth. — FY2025 · publ. January 2026 · source ↗
  6. Third-party estimateFollow LEAP deliveries: 1,570 in 2023, 1,407 in 2024, 1,802 in 2025, with around 2,000 targeted for 2026 and deliveries up forty-one per cent in the first half.
    Aviation and market coverage of GE Aerospace's narrowbody position and delivery ramp - the LEAP as the exclusive powerplant on the Boeing 737 MAX and holding more than 55% of the Airbus A320neo family through the CFM joint venture, the target of about 2,000 LEAP deliveries in 2026, first-half deliveries up 41%, and CFM RISE described as a technology demonstrator rather than a product for sale. — 2026 · publ. August 2026 · source ↗
  7. ReportedFollow LEAP deliveries: 1,570 in 2023, 1,407 in 2024, 1,802 in 2025, with around 2,000 targeted for 2026 and deliveries up forty-one per cent in the first half.
    GE Aerospace second-quarter 2026 earnings release (Exhibit 99.1 to Form 8-K of July 16, 2026) — total company GAAP and non-GAAP results, segment revenue, orders and operating profit, free cash flow, the raised full-year 2026 guidance for adjusted revenue growth, operating profit, adjusted earnings per share and free cash flow, the LEAP-1B durability kit certification, the XA102 and GE426 defence programmes, the NASA hybrid-electric ground tests, and the chief executive's commentary. — Q2 2026 · publ. 16 July 2026 · source ↗
Sources
Generated September 23, 2026