Bull Boost
Bull Boost D-Series D16 Upper Coolant Fill Neck AN16 Male Outlet
Bull Boost D-Series D16 Upper Coolant Fill Neck AN16 Male Outlet
Part number: 729859401935
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
D-Series D16 Upper Coolant Fill Neck AN16 Male Outlet by Bull Boost. Key specs: material Aluminum, finish Silver and outlet size AN16 Male. Using the right type and spec matters more than the brand name on the bottle.
Key features
- Designed for D-Series engine applications
- Fits D16 engines
- Standard radiator cap mounting flange
- TIG-welded aluminum construction
- Integrated overflow fitting included
- Lightweight and corrosion-resistant design
- TIG-Welded Assembly
- Professionally welded for maximum strength, reliability, and leak-free operation under demanding conditions
Specifications
- Brand: Bull Boost
- Part type: Fluid
- Material: Aluminum
- Finish: Silver
- Outlet Size: AN16 Male
- Overflow Port: Included
- Radiator Cap Compatibility: Standard Radiator Cap
- Construction: TIG Welded
Fitment
This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.
What it does
Fluids and chemicals keep moving parts lubricated, cooled and protected. The right fluid or chemical for the job protects parts and keeps systems working the way they were designed to.
Installation & tips
- Check your owner's manual for the exact type and spec before you buy.
- Filter: Change the filter with the fluid.
- Use a service manual for your vehicle for torque specs and procedures, and keep the old part until the new one is fitted.
FAQ
What is the fluid made of?
The listing gives the material as aluminum.
What size is it?
Outlet Size: AN16 Male.
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
Before you order
- Measure the part you are replacing and compare it with the specifications above.

Before you order: fitment and what to plan
Fluids and chemicals keep moving parts lubricated, cooled and protected.
Fitment notes
- Specs, lead time and warranty come from Bull Boost and can change. The details above this guide are the latest we have.
Not sure it fits? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentPlan the whole job
- Filter. Change the filter with the fluid.
More for your car: Oil & fluids
Questions about fluid or chemical
Will this fit my car?
Which type does my car need?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.