🏷️ Part GAA42809✅ GHAD-39 · GHAC-98D🔧 OEM Gaahleri Part
✅ Compatible Models Only
GHAD-39 (Advanced Series) · GHAC-98D (Ace Series)
Does not fit other Gaahleri models — verify before ordering.
What Is This?
Internal component that keeps the needle centred and on-axis inside the airbrush body. Controls the forward-back movement of the needle and directly affects how precisely paint flow responds to trigger input.
What It Does Inside the Airbrush
📍 Keeps needle on-axis
Prevents the needle from drifting during use — off-axis needle causes asymmetric spray patterns even with a perfect nozzle.
🎚️ Transmits trigger movement
Wear introduces slack between trigger and needle — result is vague, imprecise paint volume control.
🛡️ Protects the needle
Stable guidance reduces lateral stress and lowers the risk of needle bending during reassembly.
When You Need This Part
⚠️ Needle feels loose or floats — drifting off-axis, not holding position
⚠️ Vague trigger response — pull-back sloppy, hard to repeat same paint volume
⚠️ Visible wear or damage — deformation or loss of grip tension on inspection
⚠️ Heads Up
GHAD-39 and GHAC-98D only. Does not fit other Gaahleri models.
Gaahleri also lists a separate Needle Chucking Guide for the same models — these are different parts. Check your exploded diagram if unsure which you need.
Part Number
GAA42809
Compatible
GHAD-39 · GHAC-98D
OEM
Genuine Gaahleri part, new
Hobby Heaven
By Hobbyists. For Hobbyists. · Gaahleri™ is a trademark of its respective owner.
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Notes · Q & A
Will this spare part fit my airbrush?+
Check the exact model name against the Compatible with row on the product page. Parts from the same maker are not automatically interchangeable, even when they look similar or fit different assemblies on one model.
How do I work out which replacement part I need?+
Air or paint leakage can involve more than one sealing component, so the symptom alone does not identify the exact spare. Compare the part name and Format row, then match the Compatible with entry to the model printed on your airbrush.
Are these genuine manufacturer parts?+
Yes. The Gaahleri listings contain the maker’s own parts supplied through its channel, while the Iwata replacements are identified as genuine OEM parts or genuine spares.
How many parts come in the pack?+
Pack quantities vary between listings. Check the Pieces row for the confirmed count; where that field is absent, the manufacturer has not published a quantity.
Are measurements available for matching seals or threaded parts?+
The manufacturers do not publish seal diameters, cord thicknesses or thread measurements for these listings. Identify the replacement through its part code, Format and exact Compatible with entry rather than by visual estimation.
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Notes · Logistics
Shipping
Orders placed before 3pm (Mon–Fri) are dispatched the same day. UK delivery is by Royal Mail 24 Tracked. Free UK delivery on orders over £70. International delivery available via Royal Mail International Tracked or courier.
Returns
If you're not happy with your purchase, contact us within 30 days for a full refund or exchange. Items must be unused and in original packaging.