Screw for air filter SI carburetor, front -VESPA- Vespa PX, Rally180 (VSD1T), Rally200 (VSE1T), Sprint

Name: Screw for air filter SI carburetor, front -VESPA- Vespa PX, Rally180 (VSD1T), Rally200 (VSE1T), Sprint
Brand: OEM-Qualität
SKU: 5250027L35
Price: 0.95 EUR
Availability: InStock

0,95 €*

available immediately

Shipping weight 0,006 kg

Information on product safety

Report error

Reinforced	Increased tensile strength for secure air filter attachment to the Dellorto SI
Plus 5 mm	5 millimeters longer than standard, engages deeper into usable thread
Gentle on the thread	Reduces the risk of damaging the thread in the carburetor housing
Problem solver	Can often restore a secure hold if the thread is slightly damaged
Installation position	For the air filter screw at the front in the direction of travel (Dellorto SI)

Air filter screw -reinforced, +5 mm- for Dellorto SI carburettor (front)

This reinforced air filter screw is intended for the front mounting position (in the direction of travel at the front) on the Dellorto SI carburetor. Due to the 5 millimeter longer design, the screw engages deeper into the existing thread. This protects the thread in the carburetor housing with frequent screwing and can often make an already slightly damaged thread usable again, because there are usually still load-bearing threads further inside.

Dellorto SI air filter In front in the direction of travel Reinforced version, 8.8 Plus 5 mm length

Why a longer air filter screw?

The thread for fastening the air filter is located directly in the carburetor housing. If the screw is overtightened or frequently installed and removed, the thread can suffer. The longer screw uses more thread depth and distributes the holding force better. This is a practical solution, especially for carburetors where the first threads are already damaged, before more complex thread repairs have to be carried out.

5 millimeters more screw-in depth for more load-bearing threads.

Increased tensile strength for stable seating of the air filter.

Protects the thread in the carburetor housing during maintenance and jetting changes.

Installation position

The screw is intended for the air filter attachment on the Dellorto SI, namely for the position at the front in the direction of travel. This makes it the right choice if this screw is to be replaced or if there is already a thread problem.

Installation instructions

Always tighten the screw by hand so that it does not jam.

Only tighten with feeling: The air filter should fit snugly, not "bang on block".

Recommendation: Use a corrugated spring washer as a screw lock to prevent the screw from loosening due to engine vibrations.

If the thread is already badly damaged, a longer screw will not help permanently. In this case, a genuine thread repair (e.g. insert bushing) is the clean solution.

Key technical data

Application	Air filter mounting on Dellorto SI carburetor
Installation position	At the front in the direction of travel
Design	Reinforced (increased tensile strength)
Length	Standard size plus 5 millimeters

Scope of delivery

Set contains	1x air filter screw (reinforced, plus 5 millimeters)

FAQ: Reinforced air filter screw Dellorto SI

Frequently asked questions

For which carburetors is the screw intended?
For Dellorto SI carburetors with air filter attachment via the front screw (in the direction of travel at the front), as used in many Vespa Largeframe setups.

Why is the screw 5 millimeters longer?
The additional length provides more screw-in depth. This means that more threads are used, which protects the thread in the carburettor housing and stabilizes the holding force.

Can I use it to "repair" a damaged thread?
This often works with slightly damaged first threads because the screw can still reach a load-bearing thread further in. If the thread is completely stripped, a real thread repair is required.

How do I prevent the screw from loosening due to vibrations?
Use a corrugated spring washer as a screw lock. It keeps the preload stable and reliably prevents the air filter screw from loosening due to typical engine vibrations.

Do I have to tighten the screw with torque?
In practice, "hand-tight" is sufficient: tighten, but do not exceed the maximum torque of 3.5 Nm. Over-tightening is one of the main causes of damaged threads.

How can I recognize the correct installation position?
This refers to the air filter screw, which is located at the front when looking in the direction of travel. If you have a weak thread or poor grip right there, this is the right version.

OEM numbers (for comparison purposes only)

Piaggio:

14436, 18573, 99462, S.14436, S.18573, S18573