{"product_id":"bussmann-thl-thermal-heat-limiter-fuse-nos-boxed-gm-6556440-replacement","title":"Bussmann THL Thermal Heat Limiter Fuse (NOS, Boxed) — GM #6556440 Replacement","description":"\u003cp\u003e\u003cspan\u003eThe limiter assembly is stamped:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMICROTEMP 139C — PATENTED — FP13 — 3V4238A — Terminals: C \/ S \/ B\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe box identifies:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBuss THL — Replacement for GM #6556440 — Thermal Heat Limiter Fuse\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Bussmann (GM supplier)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e THL\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eGM Replacement Number:\u003c\/strong\u003e 6556440\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 139°C cutoff\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTerminals:\u003c\/strong\u003e C (Compressor), S (Switch), B (Battery\/Power)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e Protects A\/C compressor clutch circuit from overheating\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e 1960s–1980s GM factory A\/C systems\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eUse Case:\u003c\/strong\u003e Over‑temperature protection for Frigidaire A6 compressor harness\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThis limiter opens the circuit if the compressor clutch or wiring overheats — preventing harness melt or compressor damage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e🚗 \u003cstrong\u003e\u003cspan role=\"button\" data-url=\"ca:\/\/s?q=List_GM_applications_for_thermal_limiters\" tabindex=\"0\"\u003eCorrect GM Applications\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis THL limiter fits nearly all GM vehicles equipped with the \u003cstrong\u003eFrigidaire A6 compressor\u003c\/strong\u003e, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eGM Cars\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eChevrolet: Camaro, Chevelle, Nova, Impala, Caprice\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePontiac: Firebird, LeMans, Grand Prix\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBuick: Skylark, Riviera, Electra\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOldsmobile: Cutlass, Delta 88, 98\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCadillac: DeVille, Fleetwood\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGM Trucks\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eChevy C\/K series\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSuburban\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBlazer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGMC Sierra \/ Jimmy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy It Matters\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRequired for \u003cstrong\u003eOEM‑correct A\/C restoration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOften missing or bypassed on old vehicles\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNOS units are increasingly rare\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEssential for concours builds and high‑value restorations\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CorvairFarmer","offers":[{"title":"Default Title","offer_id":49059782918395,"sku":null,"price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/3740\/8251\/files\/aa_81e63da2-64eb-4ade-91fd-74d263f61e01.jpg?v=1783624779","url":"https:\/\/corvairfarmer.com\/products\/bussmann-thl-thermal-heat-limiter-fuse-nos-boxed-gm-6556440-replacement","provider":"CorvairFarmer","version":"1.0","type":"link"}