STIHL 4238 350 6201 Fuel Pump Primer Bulb | OEM

Product Number: 4238 350 6201

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Product Brand: Stihl
Product Type: Parts

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STIHL 4238 350 6201 OEM Fuel Pump / Primer Bulb

The STIHL 4238 350 6201 Fuel Pump, also commonly referred to as a primer bulb, is a genuine OEM STIHL replacement part used on select STIHL backpack blowers, mistblowers, and cut-off machines. This part helps prime the fuel system for easier starting and proper fuel delivery.

STIHL 4238 350 6201 is commonly listed in the air filter, spacer flange, manifold, and tank housing sections of compatible STIHL models. It is used on select BR 350, BR 430, BR 450, BR 800, SR 430, SR 450, TS 410, TS 420, and TS 440 applications where STIHL specifies this part number.

Always verify your complete STIHL model number, serial number, original part number, and parts diagram before ordering. Fuel system parts can vary by machine version and production range.


Product Details

Brand STIHL
Part Number 4238 350 6201
Product Type Fuel Pump / Primer Bulb
Common System Fuel system / carburetor priming system
Compatible Equipment Type Select STIHL backpack blowers, mistblowers, and cut-off machines
Common Model Families BR, SR, and TS series models where specified
OEM / Aftermarket Genuine OEM STIHL replacement part

Compatible STIHL Model References

STIHL 4238 350 6201 is listed for the following model references. Use this list as a guide only and confirm fitment with your exact STIHL parts diagram before ordering.

  • STIHL BR 350 - Spacer flange, air filter
  • STIHL BR 430 - Spacer flange, air filter
  • STIHL BR 450 - Spacer flange, air filter
  • STIHL BR 450 C-EF - Spacer flange, air filter
  • STIHL BR 800 C-E MAGNUM - Air filter, manifold
  • STIHL BR 800 X MAGNUM - Air filter, manifold
  • STIHL SR 430 - Spacer flange, air filter
  • STIHL SR 450 - Spacer flange, air filter
  • STIHL TS 410 - Tank housing
  • STIHL TS 410-A - Tank housing
  • STIHL TS 420 - Tank housing
  • STIHL TS 420-A - Tank housing
  • STIHL TS 440-A - Tank housing

Important: Some STIHL models have multiple versions or serial-number changes. Confirm that your parts diagram lists 4238 350 6201 before ordering.


Key Features

  • Genuine OEM STIHL fuel pump / primer bulb
  • Part number 4238 350 6201
  • Used on select STIHL BR, SR, and TS series equipment
  • Helps prime the fuel system for easier starting
  • Common replacement for cracked, leaking, stiff, or worn primer bulbs
  • Factory-correct replacement when listed in your STIHL parts diagram

Why Replace the Fuel Pump / Primer Bulb?

The fuel pump or primer bulb helps move fuel through the system before starting. Over time, primer bulbs can harden, crack, leak, or lose their ability to draw fuel. When this happens, the machine may become hard to start or may not prime properly.

Replacing a worn primer bulb with the correct OEM STIHL part helps restore proper priming and starting performance.

  • Helps restore proper fuel priming
  • Can improve starting when the old bulb is cracked or leaking
  • Helps prevent air leaks in the fuel system
  • Maintains OEM fit and function

When to Replace This Part

  • Primer bulb is cracked, cloudy, stiff, or damaged
  • Primer bulb does not fill with fuel
  • Fuel leaks around the primer bulb
  • Machine is difficult to start
  • Fuel lines or carburetor service is being performed
  • Parts diagram lists STIHL 4238 350 6201 for your machine

Important Fitment Notes

  • Verify fitment by STIHL model and parts diagram
  • Do not order by model family alone
  • Some models may have different versions or serial-number breaks
  • Inspect fuel lines, grommets, and carburetor components when replacing fuel system parts
  • If the primer bulb will not fill, check for cracked fuel lines or air leaks

Pre-Purchase Checklist

Before ordering STIHL 4238 350 6201, confirm:

  • Your complete STIHL model number
  • Your machine version or serial number if applicable
  • Your original fuel pump / primer bulb part number
  • Your parts diagram lists 4238 350 6201
  • Your fuel lines and related components are in serviceable condition

Installation and Service Notes

Fuel system service should be completed with the equipment turned off and cooled down. Keep dirt and debris out of the fuel system during installation.

  • Drain or control fuel before service if needed
  • Inspect fuel lines for cracks, stiffness, or leaks
  • Replace brittle or damaged fuel lines during service
  • Confirm the primer bulb is seated correctly after installation
  • Prime and test the machine for leaks before returning it to use

Part Number / Search Terms

STIHL 4238 350 6201 may also be searched as:

  • STIHL 4238 350 6201
  • 4238 350 6201 fuel pump
  • 4238 350 6201 primer bulb
  • STIHL fuel pump primer bulb
  • STIHL primer bulb
  • STIHL fuel pump
  • STIHL BR 800 primer bulb
  • STIHL BR 800 X MAGNUM primer bulb
  • STIHL BR 800 C-E MAGNUM primer bulb
  • STIHL BR 450 primer bulb
  • STIHL BR 430 primer bulb
  • STIHL BR 350 primer bulb
  • STIHL SR 430 primer bulb
  • STIHL SR 450 primer bulb
  • STIHL TS 410 primer bulb
  • STIHL TS 420 primer bulb
  • STIHL TS 440 primer bulb
  • STIHL OEM primer bulb

Frequently Asked Questions

What is STIHL 4238 350 6201?

STIHL 4238 350 6201 is a genuine OEM fuel pump / primer bulb used on select STIHL BR, SR, and TS series machines.

Is this the same as a primer bulb?

Yes. This part is commonly referred to as a fuel pump or primer bulb depending on the parts diagram and equipment application.

Does this fit the STIHL BR 800 X MAGNUM?

Yes, STIHL 4238 350 6201 is listed for the BR 800 X MAGNUM in the air filter / manifold section. Always confirm with your exact parts diagram before ordering.

Does this fit STIHL TS 410 and TS 420 cut-off saws?

Yes, this part is listed for select TS 410 and TS 420 applications in the tank housing section. Verify your exact version before ordering.

How do I know if my primer bulb is bad?

Common signs include cracking, leaking, stiffness, failure to fill with fuel, or hard starting. Also inspect fuel lines and related fuel system parts.

Is this an OEM STIHL part?

Yes. This listing is for a genuine OEM STIHL replacement fuel pump / primer bulb.


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