Cummins · Models: 6C
Catalog refs: CUMMINS 3944298 · CUMMINS 3942891
JAK'S JAKS-191877OEM
JAK'S JAKS-191877OEM
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Cummins 6C 8.3 Parts
Not sure which part you need? Use our parts-request checklist.
The Cummins 6C 8.3L is a workhorse mid-bore inline-six found in vocational trucks, fire apparatus, RVs, agricultural equipment, and marine and industrial gensets. JAK'S Diesel stocks aftermarket and own-brand parts for the 6C family — including 6CT, 6CTA, and the later ISC variants — from cylinder heads and fuel injectors to turbochargers, gaskets, and complete rebuild kits.
Working from an OEM, competitor, or superseded number? Cross-reference it with us and we'll confirm fitment before you buy. Most orders ship same-day from Colorado, with free freight on orders over $1,000. Call or text (720) 445-6249.
Showing 36 of 205 Cummins 6C 8.3 Parts
Cummins · Models: 4B / 6B / 6C
Catalog refs: CUMMINS 3914284 · PAI 180121OEM
JAK'S JAKS-180121OEM
JAK'S JAKS-180121OEM
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3945919 · PAI 171823HP
JAK'S JAKS-171823HP
JAK'S JAKS-171823HP
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Cummins · Models: 6C
Catalog refs: 3945918 · PAI 171822HP
JAK'S JAKS-171822HP
JAK'S JAKS-171822HP
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Cummins · Models: 6C
Catalog refs: 3901432 · PAI 171818HP
JAK'S JAKS-171818HP
JAK'S JAKS-171818HP
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Cummins · Models: 6C / ISC / ISL
Catalog refs: 3901431 · PAI 171817F
JAK'S JAKS-171817F
JAK'S JAKS-171817F
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3950661 · PAI 171816HP
JAK'S JAKS-171816HP
JAK'S JAKS-171816HP
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Cummins · Models: 6C
Catalog refs: 3901431 · PAI 171817HP
JAK'S JAKS-171817HP
JAK'S JAKS-171817HP
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Cummins · Models: 6C / ISC
Catalog refs: CUMMINS 3919937 · CUMMINS 5398081
JAK'S JAKS-161633-090
JAK'S JAKS-161633-090
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: CUMMINS 3935587 · CUMMINS 3931027
JAK'S JAKS-131740OEM
JAK'S JAKS-131740OEM
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3925878 · PAI 111295HP
JAK'S JAKS-111295HP
JAK'S JAKS-111295HP
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: CUMMINS 3901597 · CUMMINS 3934046
JAK'S JAKS-111268HP
JAK'S JAKS-111268HP
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3802657 · 3929161
JAK'S JAKS-101083HP
JAK'S JAKS-101083HP
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3802460 · 3922476
JAK'S JAKS-101089HP
JAK'S JAKS-101089HP
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3802657 · 3929161
JAK'S JAKS-101088HP
JAK'S JAKS-101088HP
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: 3802460 · 3922476
JAK'S JAKS-101084HP
JAK'S JAKS-101084HP
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC
Catalog refs: CUMMINS 3969734 · CUMMINS 4939110
JAK'S JAKS-060183EX
JAK'S JAKS-060183EX
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Cummins · Models: 6C
Catalog refs: 3972757 · 3916588
JAK'S JAKS-060175E
JAK'S JAKS-060175E
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / QSC
Catalog refs: CUMMINS 3926719 · CUMMINS 3917316
JAK'S JAKS-060105OEM
JAK'S JAKS-060105OEM
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Cummins · Models: 6C / ISC / QSC
Catalog refs: CUMMINS 4997721 · CUMMINS 4941652
JAK'S JAKS-060104OEM
JAK'S JAKS-060104OEM
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / ISL
Catalog refs: CUMMINS 3926721 · CUMMINS 3914945
JAK'S JAKS-060099OEM
JAK'S JAKS-060099OEM
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Cummins · Models: 6C / ISC / ISL
Catalog refs: CUMMINS 5255739 · CUMMINS 4945227
JAK'S JAKS-050519OEM
JAK'S JAKS-050519OEM
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / ISL / QSC
Catalog refs: PAI 181043
JAK'S JAKS-181043
JAK'S JAKS-181043
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Cummins · Models: 6C / ISC / ISL / QSC
Catalog refs: CUMMINS 3943841 · PAI 181042
JAK'S JAKS-181042
JAK'S JAKS-181042
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / ISL / QSC
Catalog refs: CUMMINS 3967751 · PAI 181039
JAK'S JAKS-181039
JAK'S JAKS-181039
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / ISL / QSC
Catalog refs: PAI 181040
JAK'S JAKS-181040
JAK'S JAKS-181040
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Cummins · Models: 6C / ISC / ISL / QSC
Catalog refs: CUMMINS 3937477 · CUMMINS 3943850
JAK'S JAKS-181037
JAK'S JAKS-181037
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: CUMMINS 4955596 · CUMMINS 4089169
JAK'S JAKS-131638E
JAK'S JAKS-131638E
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Cummins · Models: 6C
Catalog refs: 111795 5343652 · 111793 4932721
JAK'S JAKS-ISL201-026
JAK'S JAKS-ISL201-026
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Cummins · Models: 6C
Catalog refs: CUMMINS 3802429 · PAI 505090E
JAK'S JAKS-505090E
JAK'S JAKS-505090E
Available to order · Confirm dispatch
Cummins · Models: 6C / ISC / ISL
Catalog refs: CUMMINS 3901685 · CUMMINS 3943199
JAK'S JAKS-151509E
JAK'S JAKS-151509E
Available to order · Confirm dispatch
Cummins · Models: 6C
Catalog refs: CUMMINS 3800348 · CUMMINS 3800558
JAK'S JAKS-131408E
JAK'S JAKS-131408E
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Cummins · Models: 6C / ISC / ISM / ISX / L10 / M11
Catalog refs: CUMMINS 2897331 · CUMMINS 4076493
JAK'S JAKS-050653E
JAK'S JAKS-050653E
Available to order · Confirm dispatch
Cummins · Models: 4B / 6B / 6C / ISB / ISC / QSB
Catalog refs: CUMMINS 3934486 · CUMMINS 5264562
JAK'S JAKS-136026R
JAK'S JAKS-136026R
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Cummins · Models: 6C
Catalog refs: CUMMINS 4937433 · CUMMINS 5264111
JAK'S JAKS-180899E
JAK'S JAKS-180899E
In Stock · Ask About Same-Day Shipping
Cummins · Models: 4B / 6B / 6C
Catalog refs: CUMMINS 3281583 · CUMMINS 3934821
JAK'S JAKS-180892E
JAK'S JAKS-180892E
In Stock · Ask About Same-Day Shipping
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