Collection: Used Cadillac Engines For Sale

Browse Cadillac Engines by Year

Pick your model year for VIN-matched inventory. More year pages coming online weekly — if your year is not yet linked, text us your VIN and we will match you.

Cadillac Engines We Cover

Real engines from our warehouse, tested and ready to ship. Our Cadillac inventory spans every major engine family Cadillac has produced for the U.S. market.

Northstar 4.6L V8 DOHC

DeVille, DTS, Seville, STS, XLR (1993-2011). Cadillac's iconic 4.6L DOHC V8 — smooth and powerful, but SUBJECT TO HEAD BOLT THREAD FAILURE in the block. Repair via oversize/timesert kits is the standard fix. We inspect head bolt condition on every Northstar.

LT1 6.2L V8 (CTS-V Gen 3)

CTS-V Gen 3 (2016-2019), Escalade V uses LT4 supercharged variant. GM small-block LT1 6.2L V8 — direct injection with cylinder deactivation. Track abuse verification and AFM/DoD lifter inspection are both critical.

Blackwing 4.2L Twin-Turbo V8

CT6-V (2016-2019 only), Cadillac Escala concept. Limited-production 4.2L twin-turbo V8 — Cadillac-exclusive, low donor volume. Specialist sourcing required. High collector value — verify no track abuse.

LFX/LGX 3.6L V6

CTS (2008-2019), ATS (2013-2019), SRX (2010-2016), XT5 (2017+), XT6 (2020+), CT6. GM's LFX (early) and LGX (2016+) 3.6L V6 with direct injection. Timing chain wear past 100K is documented — inspect on high-mileage units.

LF3 3.6L Twin-Turbo V6

XTS V-Sport, CTS V-Sport, ATS-V (2016-2019). Twin-turbo direct-injection 3.6L V6 — Cadillac performance V6. Carbon buildup expected past 60K, and turbo actuator issues on early units. Verify tuning history via ECU pull.

LF4 3.6L Twin-Turbo V6 (CT6-V/CT4-V)

CT6 3.0TT, CT4-V (non-Blackwing), CT5-V (2020+). Upgraded LF3 with improved internals and turbos — replaced LF3 in most applications 2020+. Direct injection carbon buildup considerations apply.

Vortec 6.2L L86/L87 V8 (Escalade)

Escalade (2015+), Escalade ESV. GM's Gen V LT-series 6.2L V8 with direct injection and AFM/DFM cylinder deactivation. AFM LIFTER FAILURE is documented on high-mileage units. We inspect for tick and cylinder-drop signs.

LSY 2.0L Turbo (CT4/CT5/XT4)

CT4 (2020+), CT5 (2020+), XT4 (2019+), XT5 (2020+). GM's LSY 2.0L direct-injection turbo four — replaced older LTG. Carbon buildup expected past 60K miles. Walnut-blast intake at install for best result.

LGY 3.0L Twin-Turbo V6

CT4-V Blackwing, CT5 3.0TT, CT6. GM's LGY twin-turbo 3.0L V6 — Cadillac performance V6. Direct injection carbon buildup and turbo actuator considerations. Verify no aftermarket tuning.

LT4 6.2L Supercharged V8

CTS-V Gen 3 (limited), Escalade-V (2023+). Supercharged 6.2L V8 with Eaton R2650 supercharger. Track abuse verification is critical — high-performance engine popular with modified applications.

More Cadillac Engines

Plus 4.9L V8, 5.7L LS V8 (CTS-V Gen 1), and LSA supercharged 6.2L V8 — text us your VIN.

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Why Buy a Used Cadillac Engine from Auto Power Source

Cadillac's engine catalog splits sharply between the Northstar era (4.6L V8 DOHC in DeVille, DTS, Seville, STS from 1993-2011 — famous, iconic, and vulnerable to head bolt thread failure) and the modern GM-shared era (LFX/LGX 3.6L V6, LSY 2.0T, LT1/LT4 6.2L V8, LF3/LF4/LGY twin-turbo V6). The performance line stands apart: Blackwing 4.2L twin-turbo V8 (CT6-V 2016-2019 only, very limited), LT4 supercharged 6.2L (CTS-V Gen 3, Escalade-V), and the twin-turbo V6 progression from LF3 to LF4 to LGY. Each has a distinct known concern — Northstar head bolts, LT1 AFM lifters, LSY direct-injection carbon, LF3 turbo actuators.

Our 500+ Cadillac engines all come from low-mileage donor vehicles, cataloged by VIN, and held in our climate-controlled warehouse. Every unit clears our six-step process: VIN-matched to donor and target, ASE-certified compression test on every cylinder, leak-down evaluation, run-stand noise & smoke verification, visual inspection, multi-angle photographs for your approval, and palletized freight. On Northstar 4.6L units we specifically inspect head bolt thread condition and disclose any prior oversize/timesert repairs. On LT1 6.2L and Vortec V8 units we inspect for AFM/DFM lifter tick. On direct-injection LSY/LGY/LF3/LF4 units we verify carbon condition. On CT6-V Blackwing 4.2L we handle sourcing individually — text us your VIN.

You pay a fraction of dealer pricing for identical Cadillac engineering, ship free on a heavy-duty pallet to any address in the continental U.S., and get 30 days from delivery to return — no restocking fees. Up to a 3-year warranty covers you after install. Across 100,000+ Engines+Transmissions In Stock, our fitment-related return rate stays at 0%.

Cadillac Engine Buying Guide

Five things to verify before buying a used Cadillac engine:

1. Northstar 4.6L V8 head bolt thread failure is THE known risk. The Northstar 4.6L DOHC V8 in DeVille, DTS, Seville, and STS (1993-2011) has a well-documented head bolt thread failure in the aluminum block. Symptoms include coolant loss, external head gasket leak, and eventual overheating. Standard repair uses oversize/timesert kits. We inspect thread condition on every Northstar and disclose prior repair history.
2. AFM/DFM lifter failure on 6.2L LT-series V8 (Escalade/CTS-V). The LT1 (CTS-V Gen 3), LT4 (Escalade-V), L86/L87 (Escalade Vortec 6.2L) use cylinder deactivation via AFM/DFM. Lifter collapse is documented on high-mileage units — symptoms include ticking, misfires, and cylinder-drop codes. We inspect for AFM tick and cylinder-drop signs before listing.
3. Blackwing 4.2L twin-turbo V8 is rare — specialist sourcing. The Blackwing 4.2L twin-turbo V8 in CT6-V (2016-2019 only) is a collector-tier engine. Low production volume, and each unit is individually sourced. Text us your VIN and CT6-V chassis year — turnaround is typically 4-8 weeks, longer than volume engines. Verify no track abuse via ECU data pull.
4. LFX vs LGX 3.6L V6 non-interchange on some applications. The GM 3.6L V6 in Cadillac uses LFX (early, ~2008-2015) and LGX (2016+, updated) — different intake, injection, and internal design. They will bolt in but calibration and emissions differ. Verify engine code by VIN, not just displacement. Timing chain wear past 100K is a concern on both variants.
5. Direct-injection carbon buildup on modern turbo engines. The LSY 2.0T (CT4/CT5/XT4/XT5), LGY 3.0TT (CT4-V/CT5/CT6), LF3 and LF4 3.6TT all use direct injection. Carbon buildup on intake valves is expected past 60K miles. Symptoms include cold-start misfires and reduced throttle response. Walnut-blast intake ports at install for best result — factor this into the install cost.

Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.

Learn More: Cadillac Engine Guides

Practical guides from our team — how to install a used Cadillac engine, what to check on delivery, and what really matters when buying online.

APS Preinstallation Guide

Step-by-step guide to properly installing a used engine — what to inspect, prep, and torque before first start.

Post-Install Maintenance Checklist

Keep your used engine running like new — the break-in period, oil intervals, and warning signs to watch for.

5 Things to Know Before Buying

Warranty terms, VIN matching, mileage, testing, return policy — the checklist every buyer should run through.

After Delivery: Inspection Guide

What to check the moment your engine arrives — freight damage, matching numbers, and what to photograph.

Frequently Asked Questions

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