001601 – B4-2 Engines



3 – B4-2 Engines
4 – Starters
4 – Starter Plugs

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.

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The Estes B4-2 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.

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Additional information

Total Impulse

5.00 N-sec

Time Delay

2 Seconds

Estimated Max Lift Weight

4.0 oz (113 g)

Max Thrust

13.20 Newtons (3.0 lbs)

Thrust Duration

1.10 Seconds

Initial Weight

0.66 oz (18.6 g)

Propellant Weight

0.27 oz (7.6 g)

Quantity Per Pack


3 reviews for 001601 – B4-2 Engines

  1. Noah


    great first engine

  2. Jeff

    Great Engine!

    Love these engines! Works perfectly every time and is always reliable! Thanks Estes!

  3. Nels


    Everything worked perfect, would recommend!

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