Skip to product information
SKU:
NLT1Q00047
Ships for free in 2–4 business days.
1123-140-1902 Air Filter Cover Lock for Stihl 021 MS210 MS230 MS250
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
New aftermarket air-filter housing cover lock replacing 1123 140 1902 for compatible Stihl 021, MS210, MS230, and MS250 chainsaws.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Stihl 021
- Stihl MS210
- Stihl MS230
- Stihl MS250
Product Overview
A missing or broken cover lock lets the filter cover loosen, rattle, or fail to seal against sawdust. This small fastener matters because the cover must remain seated while the saw is running.
This is the cover-lock piece, not the air filter or complete housing. Compare its shape and retention method with the original part.
Key Features & Performance
- Secures the air-filter housing cover
- Small direct service part for listed Stihl saw families
- Useful when the original latch is lost, cracked, or stripped
- Reference 1123 140 1902
Replaces Part Numbers
- 1123 140 1902
- 1123-140-1902
Common Uses
- Replacing a lost filter-cover lock
- Repairing a cover that will not stay tight
- Completing an air-filter housing service
Technical Specifications
- Product Type: Air Filter Cover Lock / Fastener
- Application: Chainsaw air-filter housing
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Let the saw cool and disconnect the spark-plug boot
- Inspect the cover and housing for cracked retention points
- Install the lock without overtightening
- Confirm the cover is secure before operating the saw
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Match model, lock shape, retention method, and 1123 140 1902.
Frequently Asked Questions
Q: Does this include the air filter or top cover? A: No. This listing is for the cover-lock fastener only.
Q: How do I confirm this is the correct air-filter cover lock? A: Match model, lock shape, retention method, and 1123 140 1902.
Q: Is this supplied by Stihl? A: No. This is a new aftermarket product. Brand and model names identify compatible applications only.
Part Summary
keywords: 1123 140 1902 cover lock, Stihl MS250 air filter latch, MS210 cover fastener, Stihl 021 filter housing lock, chainsaw top cover repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.