What is the difference between the two options?

Option 1 is a remanufactured 4.3L Vortec with a 3-year warranty. Option 2 is the Fraser Advantage 4.3L EcoTec3 with upgraded block, updated heads and all TSB updates, with a 5-year warranty plus 1 year of free No-Fault.

Remanufactured 4.3L GM V6 Engine | Vortec & EcoTec3 | Silverado, Sierra, Express, Savana, S-10, Blazer | Fraser Engines

Fraser Engines · 4.3L GM V6 Program · 🔥 Blazing Hot Seller

Remanufactured 4.3L GM V6 Engine Assembly — Vortec & EcoTec3

Q: Which 4.3L do I need, Vortec or EcoTec3?

VIN 8th digit W or X is the 1996–2014 pushrod Vortec (Option 1); H is the 2014+ direct-injected EcoTec3 LV3 (Option 2). They are not interchangeable and Fraser confirms by VIN.

Q: What are common 4.3L problems?

Vortec intake manifold gasket coolant leaks, EcoTec3 AFM lifter failure, oil consumption, timing and oiling wear, ring and bearing wear, and gasket fatigue.

Q: Is a No-Fault warranty upgrade available?

Yes. 1- to 5-year No-Fault protection from $99 to $499 can be added at checkout. The Fraser Advantage option includes 1 year free.

Two 4.3L V6 builds for Chevrolet and GMC trucks, vans and SUVs: the zero-mile remanufactured 4.3L Vortec for 1996–2014 pushrod applications, or the Fraser Advantage™ 4.3L EcoTec3 (LV3) for 2014-and-newer direct-injection trucks and vans — with an upgraded block, updated heads, every T.S.B. update, a 5-year warranty and a free year of No-Fault. Both ship with free commercial shipping and no upfront core charge.

Remanufactured 4.3L GM Vortec V6 Engine Assembly

Option 1 · 4.3L Vortec V6 (1996–2014)

Remanufactured 4.3L GM Vortec Engine Assembly

Zero-mile remanufactured long block · pushrod Vortec V6 (VIN W / X) · 3-yr warranty

SKU: FE43GMLR-HD● In StockOnly 2 left

Your cost$2,699^.00No upfront core charge

🛡 3-Year / Unlimited-Mile parts & labor nationwide warranty
🚚 FREE shipping & core pickup to any commercial address in the continental U.S.
🔥 No upfront core charge

What’s included (10 items)

Remanufactured engine block
Remanufactured cylinder heads
New pistons
New rings
New bearings
Balanced & tested rotating assembly
New timing components
New gaskets & seals
Oil pump

Place Order Online Call (800) 731-3177

Order with a Product Specialist Mon–Fri 8AM–5PM EST · Online 24/7

Fraser Advantage™ 4.3L GM EcoTec3 Engine + ALL TSB Upgrades

Option 2 · Fraser Advantage™ 4.3L EcoTec3 (2014+) · Best Coverage

Fraser Advantage™ Remanufactured 4.3L GM EcoTec3 Engine + ALL TSB Upgrades

Direct-injection LV3 (VIN H) · upgraded block & updated heads · all T.S.B. updates · 5-yr warranty + 1-yr No-Fault

SKU: FE43ECT-HD● In StockOnly 3 left

Your cost$5,599^.00No upfront core charge

🛡 5-Year / Unlimited-Mile parts & labor warranty + 1 Year No-Fault FREE
🛠 All major OEM & aftermarket T.S.B. updates applied
🚚 FREE shipping & core pickup to any commercial address in the continental U.S.
🔥 No upfront core charge

What’s included (11 items)

Remanufactured & upgraded engine block
Remanufactured & updated cylinder heads
New pistons
New rings
New bearings
Balanced & tested rotating assembly
New timing components
New gaskets & seals
Oil pump
All OEM & aftermarket TSB updates applied

Place Order Online Call (800) 731-3177

Order with a Product Specialist Mon–Fri 8AM–5PM EST · Online 24/7

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Fraser Engines Protection Options

Protect your investment

Upgrade your coverage and add recommended installation products when placing your order. A Fraser Engines Product Specialist will confirm all selections before processing.

Optional Coverage — No-Fault Warranty Upgrades Available with purchase

1-YearNo-Fault Warranty

Entry-level No-Fault protection for the first year of ownership.

$99.00

2-YearNo-Fault Warranty

Extended No-Fault protection for two full years.

$199.00

3-YearNo-Fault Warranty

Three years of upgraded No-Fault protection.

$299.00

Premium Pay4-YearNo-Fault Warranty

Four-year No-Fault protection with Premium Pay benefits.

$399.00

Best Protection5-YearElite Maxx No-Fault Warranty

Maximum No-Fault protection with Premium Pay benefits.

$499.00

Recommended Products — Installation Add-Ons Available with purchase

Premium Installation Kit

Commonly recommended replacement components to support a professional engine installation. Contents and availability may vary by application.

$250.00

Premium Engine Break-In Oil

Specially formulated to protect critical engine components during the initial break-in period while supporting proper ring seating.

$49.99

Important: Warranty coverage, labor reimbursement, eligibility, limitations and claim requirements are governed by Fraser Engines’ written warranty terms and conditions.

Fraser Engines · 4.3L GM V6 Program

GM 4.3L V6 replacement engines built for work-truck reliability

The GM 4.3L V6 has powered Silverado, Sierra, S-10, Sonoma, Express, Savana, Blazer and Jimmy work trucks for nearly three decades — first as the pushrod Vortec (1996–2014) and then as the direct-injected EcoTec3 LV3 (2014+). Fraser remanufactured 4.3L engines are built to restore compression, oil control, timing reliability, sealing integrity and dependable daily performance under fleet and towing duty.

Zero-Mileage Remanufactured Build4.3L Vortec & EcoTec3 PlatformsVIN-Based Fitment SupportWarranty Coverage AvailableNationwide Shipping

4.3L GM V6

Common GM 4.3L concerns addressed

Built to correct known 4.3L Vortec & EcoTec3 problems

The 4.3L is one of GM’s most durable truck engines, but decades of fleet miles — and the newer EcoTec3’s cylinder-deactivation hardware — bring well-documented weak points that Fraser corrects during remanufacturing.

Intake manifold gasket coolant leaks (Vortec)

The Vortec’s lower intake gaskets leak coolant into the oil — the platform’s signature failure — leading to bearing damage and overheating.

AFM lifter failure (EcoTec3)

Active Fuel Management lifters collapse and wipe the cam on the LV3, causing misfires, ticking and metal in the oil.

Oil consumption

Worn rings on high-mileage Vortecs and AFM-related oil use on the EcoTec3 lead to heavy oil consumption and low-oil damage.

Timing chain & oiling support wear

Stretched chains, worn oil pumps and restricted passages reduce pressure to the cam, lifters and bearings.

High-mileage piston, ring & bearing wear

Worn rings and bearings lead to low compression, knocking and power loss after years of work-truck duty.

Gasket & sealing fatigue

Intake, valve cover, oil pan and rear main seals leak after decades of heat cycling and towing.

Fraser Advantage™ benefits

A better alternative to another used 4.3L

A used 4.3L may already have coolant-contaminated oil, collapsed AFM lifters, worn rings or sludge you can’t see. Fraser remanufactured 4.3L engines are a cleaner, stronger long-term repair with professional remanufacturing, VIN-based fitment support and warranty options — so Chevrolet and GMC owners and fleets can repair the vehicle correctly the first time.

Zero-mileage remanufactured 4.3L V6 build instead of a questionable salvage engine
Updated timing components — chain, gears and tensioner
Updated internal components — pistons, rings and bearings
Premium gasket set and oil pump included for oil control and pressure
Upgraded block, updated heads and every TSB update on the Fraser Advantage™ EcoTec3 build
Built for Chevrolet & GMC truck, van and SUV applications with VIN-based fitment support
5-Year / Unlimited-Mile coverage and 1-Year No-Fault included on the premium build
Free commercial shipping and free core pickup — Fraser coordinates the return

Premium Remanufacturing ProcessBetter Value Than UsedWarranty Options AvailableCommercial Shop Shipping Support

Fraser technician building a remanufactured engine

Trusted Since 1961

Know the difference

Used 4.3L GM V6 vs. Fraser remanufactured 4.3L

A used 4.3L may come from a donor with unknown fleet mileage, coolant-contaminated oil, AFM lifter failure, worn rings or sludge. Even if it runs today, hidden wear may already be developing. Instead of gambling, you receive a professionally renewed replacement backed by Fraser’s support.

Feature	Used Salvage Engine	Low-Cost Rebuild	Fraser Remanufactured
Internal mileage	Prior service mileage; unknown	Varies	Zero miles since remanufacture
Factory updates (TSBs)	None	Rarely	All applicable updates applied on Fraser Advantage™
Cylinder heads & intake sealing	Unknown coolant-leak history	Often reused	Remanufactured, pressure tested & resurfaced; updated heads on Fraser Advantage™
Timing chain & lifters	Unknown wear — AFM failure likely on EcoTec3	Often reused	All new timing components; TSB lifter updates on Fraser Advantage™
Internal components	Existing wear	Reuses marginal parts	New pistons, rings, bearings, oil pump, gaskets & seals
Machine work	None	Minimal	CNC-machined block; heads pressure-tested & resurfaced
Fitment verification	Varies	Varies	VIN-based verification before shipment
Warranty	Varies / none	Short-term	3-Yr (Vortec) or 5-Yr + 1-Yr No-Fault (Fraser Advantage™ EcoTec3)
Core return	Varies	Varies	Free commercial pickup · Fraser support

4.3L GM V6 vehicle fitments — Vortec & EcoTec3

Vehicle applications & VIN-based fitment

Option 1 fits the 1996–2014 pushrod 4.3L Vortec (VIN W / X). Option 2 fits the 2014-and-newer direct-injected 4.3L EcoTec3 LV3 (VIN H). The two are not interchangeable — 2014 is a crossover year for the Silverado and Sierra — so Fraser matches every order to your VIN before shipment.

Silverado 1500 / Sierra 1500S-10 / SonomaExpress / SavanaBlazer / JimmyTahoe / Yukon (EcoTec3)

Option 1 — 4.3L GM Vortec V6 vehicle fitments 1996–2014 · VIN W / X

Year(s)	Make	Model	Engine Code	Notes
1996–2014	Chevrolet	Silverado 1500	VIN W / X	Base V6 work-truck engine
1996–2014	GMC	Sierra 1500	VIN W / X	Shared platform with Silverado
1996–2004	Chevrolet	S-10 Pickup	VIN W / X	High-torque V6 compact truck option
1996–2004	GMC	Sonoma	VIN W / X	Equivalent GMC compact pickup
1996–2014	Chevrolet	Express 1500 / 2500	4.3L Vortec V6	Commercial and fleet van applications
1996–2014	GMC	Savana 1500 / 2500	4.3L Vortec V6	Gasoline V6 work-van engine
1996–2009	Chevrolet	Blazer	4.3L Vortec V6	Mid-size SUV application
1996–2009	GMC	Jimmy	4.3L Vortec V6	Shared platform with Blazer

Option 2 — 4.3L GM EcoTec3 V6 vehicle fitments 2014+ · LV3 · VIN H

Year(s)	Make	Model	Engine Code	Notes
2014–2018	Chevrolet	Silverado 1500	4.3L EcoTec3 V6 LV3 / VIN H	Direct injection; Active Fuel Management
2014–2018	GMC	Sierra 1500	4.3L EcoTec3 V6 LV3 / VIN H	Base V6 option with modern EcoTec3 architecture
2014–2021	Chevrolet	Express 1500 / 2500	4.3L EcoTec3 V6 LV3 / VIN H	Commercial and fleet applications
2014–2021	GMC	Savana 1500 / 2500	4.3L EcoTec3 V6 LV3 / VIN H	Gasoline V6 work-van engine
2015–2020	Chevrolet	Tahoe Base / LS	4.3L EcoTec3 V6 LV3 / VIN H	Fleet and base-trim configurations
2015–2020	GMC	Yukon Base / SLE	4.3L EcoTec3 V6 LV3 / VIN H	Available in select trims

VIN-specific matching: have your full 17-character VIN ready so our team can match the exact 4.3L replacement engine — Vortec or EcoTec3 — for your vehicle.

True remanufacturing — not a budget rebuild

How your Fraser 4.3L is built

Every Fraser 4.3L V6 is torn down to the bare block and rebuilt in a controlled, multi-step process. Choose the Fraser Advantage™ option and every applicable OEM and aftermarket Technical Service Bulletin update is applied — so known weak points are corrected before the engine ships.

01Complete teardown to the bare block, thermal cleaning and shot blasting.

02Pressure-tested block, then CNC-machined to OEM or tighter tolerances.

03Remanufactured cylinder heads — pressure tested, resurfaced, valve seats machined; updated heads on Fraser Advantage™.

04New pistons, rings & bearings installed to factory-clearance specs.

05Updated timing components — chain, gears and tensioner.

06New oil pump and cleaned passages for proper pressure to the cam, lifters and bearings.

07Premium gasket set throughout to prevent leaks and heat-related failures.

08Balanced & tested rotating assembly and final quality inspection.

❌ Used engines

Unknown fleet mileage, coolant-in-oil history and lifter wear you can’t see.

❌ Cheap rebuilds

Reuse marginal parts and skip the updates — the same failure comes back.

✅ Fraser remanufactured

Fully remanufactured, VIN-verified fitment, and up to a 5-year warranty with free No-Fault on Fraser Advantage™.

Inside the Fraser plant

Our 14-step engine block remanufacturing process

Fraser is committed to delivering engines of exceptional quality and performance. Our rigorous, detailed process ensures every engine meets our high standards and exceeds your expectations.

Which 4.3L do I need — Vortec or EcoTec3?

Check the 8th digit of your VIN. W or X is the 1996–2014 pushrod 4.3L Vortec (Option 1). H is the 2014-and-newer direct-injected 4.3L EcoTec3 LV3 (Option 2). The two are not interchangeable, and 2014 Silverado and Sierra trucks were built with both — Fraser confirms by VIN before shipment.

Is a remanufactured 4.3L better than a used engine?

Yes, for most owners and fleets. A used 4.3L may already have coolant-contaminated oil from intake gasket leaks, collapsed AFM lifters, worn rings or sludge. A Fraser remanufactured 4.3L is a zero-mile build with a remanufactured block and heads, new pistons, rings, bearings, timing components, oil pump, gaskets and seals, VIN-verified fitment and a 3- or 5-year unlimited-mile warranty.

What vehicles used the 4.3L GM V6?

Vortec: 1996–2014 Silverado 1500, Sierra 1500, Express and Savana; 1996–2004 S-10 and Sonoma; 1996–2009 Blazer and Jimmy. EcoTec3: 2014–2018 Silverado 1500 and Sierra 1500, 2014–2021 Express and Savana, and 2015–2020 Tahoe and Yukon base trims.

What are common 4.3L problems?

Vortec: intake manifold gasket coolant leaks, oil leaks, timing and oiling wear, high-mileage ring and bearing wear. EcoTec3: AFM lifter failure, oil consumption, timing wear and sealing fatigue.

What’s the difference between the two options?

Option 1 ($2,699) is a zero-mile remanufactured 4.3L Vortec with a 3-year warranty. Option 2 ($5,599) is the Fraser Advantage™ 4.3L EcoTec3 with an upgraded block, updated heads and every OEM and aftermarket TSB update, backed by a 5-year warranty plus 1 year of free No-Fault coverage.

Can Fraser ship my 4.3L engine to my repair shop?

Yes. Shipping and core pickup are free to any commercial address in the continental United States.

Is a No-Fault warranty upgrade available?

Yes. 1- to 5-year No-Fault protection ($99–$499) can be added at checkout. The Fraser Advantage™ EcoTec3 already includes 1 year of No-Fault coverage free.

The gold standard in engine remanufacturing

OEM-grade machinery, in-house

COMEC ACF200 boring & resurfacing

Dual-function boring and resurfacing with unrivaled accuracy — cylinders bored and honed to exact dimensions, blocks and heads resurfaced to precise specifications for a perfect head-gasket seal on every engine type.

CNC crankshaft grinder

Complete crank grinding in a single chucking — the fully automated precision typically exclusive to OEM plants — delivering stabilized dimensional accuracy, superior surface quality and tighter tolerances.

Flame spray technology

Operational since 2016, our flame spray machine applies cylinder-bore coatings with unmatched precision and uniformity, surpassing industry benchmarks for current-model-year engines and extending engine life.

Industry-leading warranty coverage

Real protection, not fine print

Fraser handles warranty claims directly with engine specialists — not call-center reps. Labor is reimbursed using Mitchell or ALLDATA book time.

Option 1 · 4.3L Vortec Remanufactured3 Years / Unlimited Miles

Parts & labor nationwide warranty · No-Fault upgrades available at checkout

Fraser Advantage™ EcoTec3 · Option 2Included5 Years / Unlimited Miles

Parts & labor nationwide PLUS 1 year of FREE No-Fault coverage — rarely matched in the remanufactured engine market

Optional No-Fault upgrades from 1 to 5 years are available on either option — see Protection Options. Coverage, labor reimbursement, eligibility, exclusions and claim procedures are governed by Fraser Engines’ written warranty agreement.

Answers before you order

4.3L GM V6 engine replacement FAQs

Which 4.3L do I need — Vortec or EcoTec3?

Is a remanufactured 4.3L better than a used engine?

What vehicles used the 4.3L GM V6?

What are common 4.3L problems?

Vortec: intake manifold gasket coolant leaks, oil leaks, timing and oiling wear, high-mileage ring and bearing wear. EcoTec3: AFM lifter failure, oil consumption, timing wear and sealing fatigue.

What’s the difference between the two options?

Can Fraser ship my 4.3L engine to my repair shop?

Yes. Shipping and core pickup are free to any commercial address in the continental United States.

Is a No-Fault warranty upgrade available?

Yes. 1- to 5-year No-Fault protection ($99–$499) can be added at checkout. The Fraser Advantage™ EcoTec3 already includes 1 year of No-Fault coverage free.

Ready to replace your 4.3L?

4.3L Vortec $2,699 · Fraser Advantage™ EcoTec3 $5,599

Talk to a trained Fraser powertrain specialist today. We’ll verify fitment, explain warranty options, review core return details and provide a clear quote for your Silverado, Sierra, Express, Savana, S-10, Blazer or Tahoe 4.3L replacement engine.

800-731-3177

Place Order Online Request My 4.3L GM Quote Check Fitment

Press 1 for Sales · Mon–Fri 8AM–5PM EST · Online ordering open 24/7 · sales@fraserengines.com

From$2,699.00

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