FILAMENT SELECTOR TOOL FOR CAR PARTS

I get asked all the time, what filament should I use for car parts? Great question, so we made a tool that can help you pick the right material for your next car part.

Start by picking the environment your 3d printed car part will be installed.

The tool will give you a list of the recommended filaments to print with based on max heat.

But once you have your filament, you’re going to need the right printer.

The tool also guides you on which printer works best based on budget, part type, and your parts size too.

Filament → Printer Selector • Automotive

v2.0

1

Pick your part environment

Tap a part environment to see the right material ↓

🧰 INDOOR AUTO ACCESSORIES 🧭 INTERIOR CAR PARTS 🌤️ EXTERIOR CAR PARTS 🔧 ENGINE BAY CAR PARTS

Best Uses: Indoor automotive accessories (tool organization, auto-themed coasters, phone holders)

🧰 INDOOR AUTO ACCESSORIES
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
PLA	2750 MPa	Up to 134° F	Low	Low	Optional	$20 (1kg roll)
PETG	2050 MPa	Up to 156° F	High	Medium	Recommended	$20 (1kg roll)

Best Uses (Extreme heat): interior parts exposed to high solar load/black dashboards

🧭 INTERIOR CAR PARTS (Extreme)
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
ABS	1880 MPa	Up to 212° F	High	Medium	Optional	$20 (1kg roll)
ABS-GF	2860 MPa	Up to 230° F	High	Meduim	Optional	$30 (1kg roll)
ASA	1920 MPa	Up to 212° F	High	High	Optional	$30 (1kg roll)
ASA-CF	3740 MPa	Up to 230° F	High	High	Optional	$37 (1kg roll)

Best Uses (Extreme heat + UV): exterior trim, flaps, mounts, fender flares, plastic replacements

🌤️ EXTERIOR CAR PARTS
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
ASA	1920 MPa	Up to 212° F	High	High	Optional	$30 (1kg roll)
ASA-CF	3740 MPa	Up to 230° F	High	High	Optional	$37 (1kg roll)

Best Uses (Moderate engine bay heat): hose clamps, fuse box covers, plastic replacements

🔧 ENGINE BAY CAR PARTS (Moderate)
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
PC	2310 MPa	Up to 442° F	Medium	Medium	Required	$40 (1kg roll)

Best Uses (High engine bay heat): intake-adjacent and cylinder-head-adjacent plastics

🔧 ENGINE BAY CAR PARTS (High)
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
PA6-GF	3670 MPa	Up to 359° F	Medium	High	Required	$60 (1kg roll)
PA6-CF	5460 MPa	Up to 366° F	Medium	High	Required	$80 (1kg roll)
PAHT-CF (PA12 Nylon CF)	4230 MPa	Up to 381° F	High	High	Required	$95 (1kg roll)

Best Uses (Extreme engine heat): components mounted to valve cover/intake manifold

🔧 ENGINE BAY CAR PARTS (Extreme)
Filament	Stiffness	Heat Resistance	Water Resistance	UV Resistance	Dry Before Print	Avg. Cost
PET-CF	5320 MPa	Up to 401° F	Medium	High	Required	$85 (1kg roll)
PPA-CF	9860 MPa	Up to 440° F	Medium	High	Required	$150 (.75kg)
PPS-CF	7160 MPa	Up to 507° F	High	High	Required	$130 (.75kg)

↓ Now find a printer that can run it

3 taps → your printer match for these parts

2

What's your budget?

Under $300Getting started

$300 – $1,150Serious hobbyist

$1,500+No compromises

3

What parts do you want to make? (tap all that apply)

✓

Prototyping or garage organization parts

PLA / PETG lower heat resistant filaments

✓

Interior and exterior car parts

Vents, brackets, delete plates that survive heat & sun — ASA / ABS / PC filaments

✓

Maximum-strength and heat resistant engine bay parts

Plastic covers, cold air intakes, plastic mounts — Carbon / Glass fiber filaments

4

Biggest part you'll print?

Up to 7″Knobs, mounts, clips

Up to 10″Vents, brackets, pods

Up to 12.5″+Intakes, panels, cluster gauge

⚔️ Head-to-Head

Your Match (auto-filled from your answers)

Compare Against

Quick compare:

Some links above are affiliate links — if you buy through them it supports the channel at no extra cost to you. Prices are approximate and change often; always check the linked page for current pricing.

Car Part Filament FAQ

What filament should I use for engine bay car parts?

For moderate engine bay heat, polycarbonate (PC) is a pretty good choice. For high heat near the intake or cylinder head, use a glass or carbon-filled nylon like PA6-GF, PA6-CF, or PAHT-CF.

For the hottest zones step up to PET-CF, PPA-CF, or PPS-CF, which holds up past 500°F.

What is the best filament for exterior car parts?

ASA and ASA-CF are the best picks for exterior trim, flaps, mounts, and fender flares.

They combine high heat resistance with strong UV resistance, so parts won't fade or get brittle after a summer in the sun the way PLA or PETG would.

Can you use PLA for car parts?

Only for prototyping and fitment checks. PLA softens around 134°F, so a part left on a hot dashboard will sag and deform.

For any functional part that lives in a car, move up to PETG, ASA, ABS, or an engineering filament rated for the heat zone.

What is the most heat-resistant filament for car parts?

PPS-CF is the most heat-resistant option in this guide followed by PPA-CF. Both are carbon-fiber-reinforced engineering filaments meant for the most extreme under-hood placements.

Do I need a special printer for car part filament?

For PLA, PETG, ASA, and ABS, most enclosed printers work. For carbon and glass-fiber filaments and high-temp engineering materials, you need a hardened steel nozzle, high nozzle and bed temperatures, and an enclosure to prevent warping.

What’s the next steps?

Now that you have your material and printer, the next step is to stop downloading pre-made car parts online and make your own.

That's exactly what the workshop covers below.

Design 3d Printed Car Parts That Match Your Exact Build.

One afternoon. No complex software. Parts that fit your build perfect.

1

Design fast — Go from blank screen to a finished car part in one afternoon. Not 30 days.

2

Reverse engineer — Take any existing printable part found online and modify it for your exact build.

3

Build what doesn't exist — Design delete plates, bezels, mounts and more. Parts made for your car, by you.

“

This workshop finally made designing 3d printed car parts feel doable. I had a replacement part ready for my project car in a few hours.

@likorsuz ⭐⭐⭐⭐⭐

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