{
  "opening": "On sheets checked 21 October 2026, Fiberon PA6-CF20 lists heat deflection of 215 °C (419 °F) at 0.45 MPa and 173 °C (343 °F) at 1.8 MPa, PolyLite PC lists 111 °C (232 °F) and 107 °C (225 °F), and PolyLite ASA lists 103 °C (217 °F) and 100 °C (212 °F). No page states an engine-bay temperature, so nothing here is certified for an engine bay. PolyLite PLA lists 60 °C (140 °F) at 0.45 MPa. Those are specimen tests, not a running engine.",
  "question": "What filament survives engine-bay temperatures?",
  "slug": "engine",
  "useCase": "heat-resistance",
  "useCaseLabel": "Heat resistance",
  "updated": "2026-10-22",
  "shortAnswer": "No page states an engine-bay temperature, so nothing here is certified for an engine bay. On sheets checked 21 October 2026, Fiberon PA6-CF20 lists heat deflection of 215 °C (419 °F) at 0.45 MPa and 173 °C (343 °F) at 1.8 MPa, PolyLite PC lists 111 °C (232 °F) and 107 °C (225 °F), and PolyLite ASA lists 103 °C (217 °F) and 100 °C (212 °F). PolyLite PLA lists 60 °C (140 °F) at 0.45 MPa. Those are specimen tests, not a running engine.",
  "recommendedMaterials": [
    "pa-cf",
    "pc",
    "asa"
  ],
  "printerConsiderations": [
    "Fiberon PA6-CF20 starts at a 280 °C (536 °F) nozzle and asks for a hardened nozzle. A printer whose maximum is below 280 °C (536 °F) does not get to use the 215 °C (419 °F) heat-deflection figure.",
    "PolyLite PC's database bed is 100–120 °C (212–248 °F). That is a printer limit, separate from the 111 °C (232 °F) heat-deflection number.",
    "A cabin clip and an engine-bay clip are not the same job. The car-interior page is the sun-through-glass case."
  ],
  "pros": [
    "Each heat-deflection pair names the load. 0.45 MPa and 1.8 MPa stay side by side.",
    "PLA stays in the comparison only as the low sheet, 60 °C (140 °F) at 0.45 MPa, not as a recommendation."
  ],
  "cons": [
    "No comments, and no sheet cited here, states an engine-bay air temperature or an oil temperature.",
    "The comments that were supplied are about PC, PA, surface friction, and how to print ASA on a Prusa. They do not measure a bay."
  ],
  "community": "The editorial summary says an engine bay needs PA-CF, PC, or ASA at minimum, and that PLA and PETG fail. The excerpts do not say engine bay. r/BambuLab 1g6avvu, score 3: \"For smaller mechanical stuff like the pic you posted, my goto is PC. High temp stuff, I go to PA.\" Score 2 says PETG has low surface friction for clock wheels, in that commenter's experience. r/prusa3d 1r6fwad, score 20, says to run the MK52 bed at 120C for ASA, heat-soak toward 45C in the chamber, and is cut off. Score 14 says a C1 chamber of at least 50C before ASA or PA6-CF, and is cut off. No excerpt was supplied for r/prusa3d 18z5ul3, r/3Dprinting 1wilplp, or r/BambuLab 15ligca.",
  "related": [
    "heat",
    "car-interior",
    "nylon",
    "pc"
  ],
  "faq": [
    {
      "q": "What filament survives engine-bay temperatures?",
      "a": "On sheets checked 21 October 2026, Fiberon PA6-CF20 lists heat deflection of 215 °C (419 °F) at 0.45 MPa and 173 °C (343 °F) at 1.8 MPa, PolyLite PC lists 111 °C (232 °F) and 107 °C (225 °F), and PolyLite ASA lists 103 °C (217 °F) and 100 °C (212 °F). No page states an engine-bay temperature, so nothing here is certified for an engine bay. PolyLite PLA lists 60 °C (140 °F) at 0.45 MPa. Those are specimen tests, not a running engine."
    },
    {
      "q": "Is 215 °C (419 °F) the temperature an engine bay is allowed to reach?",
      "a": "No. 215 °C (419 °F) at 0.45 MPa and 173 °C (343 °F) at 1.8 MPa are ISO 75 results on the Fiberon PA6-CF20 sheet, checked 21 October 2026. The sheet does not mention an engine. A part in oil, fuel, or vibration is outside that test."
    },
    {
      "q": "The score-20 comment uses a 120 °C (248 °F) bed for ASA. Is that PolyLite ASA's bed?",
      "a": "No. That sentence is about an MK52 bed and a satin sheet on r/prusa3d. PolyLite ASA TDS EN V5.4 lists 75–95 °C (167–203 °F). The comment's 120C, 45C, and 50C figures stay on that comment."
    }
  ],
  "sources": [
    {
      "title": "Fiberon PA6-CF20 TDS V1.1",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/TDS_FIBERON_PA6-CF20_V1.1_EN.pdf",
      "kind": "datasheet"
    },
    {
      "title": "PolyLite PC TDS EN V5.4",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PC_TDS_EN_V5.4.pdf",
      "kind": "datasheet"
    },
    {
      "title": "PolyLite ASA TDS EN V5.4",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_ASA_TDS_EN_V5.4.pdf",
      "kind": "datasheet"
    },
    {
      "title": "PolyLite PLA TDS EN V5.4",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PLA_TDS_EN_V5.4.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Filament heat resistance dataset",
      "url": "https://filamentfacts.com/data/filament-heat-resistance",
      "kind": "other"
    },
    {
      "title": "Community source, r/BambuLab 1g6avvu",
      "url": "https://www.reddit.com/r/BambuLab/comments/1g6avvu/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/prusa3d 1r6fwad",
      "url": "https://www.reddit.com/r/prusa3d/comments/1r6fwad/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/prusa3d 18z5ul3",
      "url": "https://www.reddit.com/r/prusa3d/comments/18z5ul3/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/3Dprinting 1wilplp",
      "url": "https://www.reddit.com/r/3Dprinting/comments/1wilplp/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 15ligca",
      "url": "https://www.reddit.com/r/BambuLab/comments/15ligca/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "Fiberon PA6-CF20 TDS V1.1, checked 21 October 2026, lists a nozzle of 280–300 °C (536–572 °F), a bed of 40–50 °C (104–122 °F), drying at 100 °C (212 °F) for 10 h, and heat deflection of 215 °C (419 °F) at 0.45 MPa and 173 °C (343 °F) at 1.8 MPa, ISO 75. The row requires a hardened nozzle. The sheet does not mention an engine bay.",
      "brand": "Fiberon",
      "product": "PA6-CF20",
      "material": "PA/CF",
      "url": "/brand/fiberon/pa6-cf20",
      "nozzle": "280–300 °C (536–572 °F)",
      "bed": "40–50 °C (104–122 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    },
    {
      "rank": 2,
      "note": "Open Filament Database nozzle 260–300 °C (500–572 °F) and bed 100–120 °C (212–248 °F). PolyLite PC TDS EN V5.4, checked 21 October 2026, lists heat deflection of 111 °C (232 °F) at 0.45 MPa and 107 °C (225 °F) at 1.8 MPa, ISO 75. The nozzle and bed are the database cells, not a sentence copied from that heat-deflection table.",
      "brand": "Polymaker",
      "product": "Polylite PC",
      "material": "PC",
      "url": "/brand/polymaker/polylite-pc",
      "nozzle": "260–300 °C (500–572 °F)",
      "bed": "100–120 °C (212–248 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PC_TDS_EN_V5.4.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "PolyLite ASA TDS EN V5.4, checked 21 October 2026, lists a nozzle of 230–260 °C (446–500 °F), a bed of 75–95 °C (167–203 °F), drying at 70 °C (158 °F) for 7 h, and heat deflection of 103 °C (217 °F) at 0.45 MPa and 100 °C (212 °F) at 1.8 MPa, ISO 75.",
      "brand": "Polymaker",
      "product": "Polylite ASA",
      "material": "ASA",
      "url": "/brand/polymaker/polylite-asa",
      "nozzle": "230–260 °C (446–500 °F)",
      "bed": "75–95 °C (167–203 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_ASA_TDS_EN_V5.4.pdf",
      "affiliateUrl": null
    }
  ]
}