# CAT E21RH-6 Engine Air Starter - Heavy-Duty Diesel Engines

The **CAT Engine Air Starter E21RH-6** is a robust pneumatic solution engineered for dependable engine ignition in demanding industrial and marine applications. Designed specifically for heavy-duty diesel engines, this air starter utilizes compressed air to deliver powerful torque, ensuring reliable operation even in hazardous or remote environments where electric starters might be unsuitable. This **CAT** air starter ensures efficient and safe starting performance.

This **E21RH-6** air starter is known for its durability and consistent performance. This product is ideal for oil and gas, marine, and power generation industries. The **CAT Engine Air Starter E21RH-6** provides superior starting power. It is designed to withstand harsh conditions, the **E21RH-6** is a reliable choice for critical applications.

**Key Features:**

-   **High torque** pneumatic starting capability for large diesel engines
    
-   Durable and rugged design suitable for harsh industrial and marine environments
    
-   Reliable operation in hazardous areas where electrical systems are restricted
    
-   **Low maintenance** with simple mechanical construction
    
-   Fast and efficient engine starting with consistent performance
    

**Specifications:**

-   Model: E21RH-6
    
-   Type: Pneumatic (air) starter
    
-   Application: Diesel engine starting (industrial, marine, oil & gas)
    
-   Operating Pressure: Typically 90–150 PSI
    
-   Torque Output: High torque for heavy-duty engine cranking
    
-   Rotation: Right-hand rotation
    
-   Construction: Heavy-duty industrial-grade materials
    
-   Mounting: Flange-mounted design
    

The **CAT Engine Air Starter E21RH-6** is a trusted solution, delivering superior performance and durability. This air starter ensures safe and efficient operation across industries. For inquiries, contact Ram Automations at [info@ramautomations.com](mailto:info@ramautomations.com) to enhance your engine systems with this dependable pneumatic starter.

## Details

- **Price:** 999.0 USD
- **Vendor:** CAT
- **Type:** Engines & Components > Starters > Air Starters
- **Tags:** air starter, CAT, diesel engine, E21RH-6, industrial equipment, pneumatic starter

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- CAT Engine Air Starter E21RH-6

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> Source: [Ram Automations](https://ramautomations.com/products/cat-e21rh-6-engine-air-starter)
> Updated: 2026-08-31