2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The Nissan Altima 3.5L Crankshaft 12200-JA12B is a replacement engine crankshaft for compatible 2015, 2016, 2017, and 2018 Nissan Altima models equipped with the 3.5-liter VQ35DE V6 petrol engine. It is designed for engine rebuilding and repair applications where the original crankshaft has suffered excessive wear, scoring, bearing damage, distortion, or other mechanical failure.

Nissan’s official parts catalog lists 12200-JA12B as a crankshaft used with compatible Altima applications, including the 3.5L V6 configuration. Nissan’s 2015 and 2018 Altima 3.5L parts catalogs both show this crankshaft within the engine assembly.

The Nissan Altima 3.5L Crankshaft 12200-JA12B is suitable for engine rebuilding workshops, Nissan specialists, automotive repair centers, engine parts distributors, vehicle rebuilders, exporters, and wholesale automotive buyers requiring a VQ35DE crankshaft.

Exact fitment should still be checked using the VIN, engine code, original crankshaft reference, and production information before purchase.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Genuine Nissan OEM Part Number 12200-JA12B

The primary identification for this product is:

Nissan OEM Part Number: 12200-JA12B
Part Description: Crankshaft Assembly
Engine Family: VQ35DE
Engine Capacity: 3.5L V6

OEM catalog data identifies 12200-JA12B as a genuine Nissan crankshaft assembly and confirms fitment for 2015–2018 Nissan Altima models equipped with the six-cylinder 3.5L VQ35DE engine.

Using the OEM number is especially important when sourcing internal engine parts because components for the 2.5L QR25DE engine are different.

The Nissan Altima 3.5L Crankshaft 12200-JA12B should therefore not be confused with a crankshaft for a 2.5L four-cylinder Altima.

2015-2018 Nissan Altima Fitment

Documented fitment includes compatible:

• 2015 Nissan Altima 3.5L
• 2016 Nissan Altima 3.5L
• 2017 Nissan Altima 3.5L
• 2018 Nissan Altima 3.5L

Depending on year and market, applicable trim descriptions can include:

• Altima 3.5 S
• Altima 3.5 SV
• Altima 3.5 SL
• Altima 3.5 SR
• Selected Tech-equipped 3.5L models  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The critical fitment point is the VQ35DE 3.5L V6 engine, not simply the Altima trim badge.

OEM fitment data specifically lists 2015–2018 Altima S, SL, SR, SV, and Tech configurations with the 3.5L VQ35DE for 12200-JA12B.

VQ35DE Engine Compatibility

The Nissan Altima 3.5L Crankshaft 12200-JA12B is associated with Nissan’s VQ35DE engine family.

The VQ35DE is a 3.5-liter V6 petrol engine used in a range of Nissan vehicles.

For the Altima, the crankshaft must be matched to the VQ35DE rather than the QR25DE 2.5-liter four-cylinder engine.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Nissan’s official 2018 Altima 3.5L catalog lists 12200-JA12B alongside V6-specific internal engine components such as pistons, connecting rods, and crankshaft bearings.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Buyers should confirm the engine code from the vehicle or engine identification information before ordering.

Supersedes Earlier Crankshaft References

One important advantage of identifying the current OEM number is that 12200-JA12B supersedes earlier Nissan crankshaft references.

Documented earlier numbers include:

• 12200-JA11B
• 12201-JA10B

Nissan-compatible OEM catalog data identifies 12200-JA12B as the current replacement for these earlier references.

For example, the 2016 Altima VQ35DE catalog lists 12200-JA11B and states that it has been replaced by 12200-JA12B.

Production-specific catalogs also show:

12200-JA10B for some earlier production vehicles.

12200-JA11B for subsequent VQ35DE production.

12200-JA12B for later production and as a superseding replacement.

This is why VIN and OEM-number verification remain useful even though 12200-JA12B is documented across the 2015–2018 range.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

2018 Production Information 2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

For 2018 VQ35DE applications, Nissan-compatible catalog data lists:

12200-JA12B – Crankshaft Assembly

for production from approximately September 2017 onward.

The same catalog lists earlier 12200-JA11B production and identifies it as replaced by 12200-JA12B.

This supports the Nissan Altima 3.5L Crankshaft 12200-JA12B as the later/current service reference for compatible engines.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

What the Crankshaft Does

The crankshaft is one of the central rotating components inside the engine.

It converts the reciprocating movement of the pistons and connecting rods into rotational motion that ultimately drives the transmission.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The Nissan Altima 3.5L Crankshaft 12200-JA12B works together with components including:

• Pistons
• Connecting rods
• Main bearings
• Connecting-rod bearings
• Crankshaft pulley
• Flywheel/flexplate-related components
• Rear main seal
• Timing components  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Because the crankshaft is a precision internal engine component, correct bearing selection, lubrication, assembly, and dimensional inspection are essential during an engine rebuild.

Crankshaft Bearings Are Separate

Crankshaft main bearings should not automatically be assumed to come with the crankshaft.

Nissan’s official Altima catalog lists the crankshaft and main bearings as separate service components.

Nissan also uses different bearing grades within the engine.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

For an engine rebuild, the technician should determine the correct bearing specification according to the engine and crankshaft measurements rather than assuming one universal bearing set fits every application.

Therefore, the Nissan Altima 3.5L Crankshaft 12200-JA12B should be described as the crankshaft assembly itself unless bearings are specifically included.

Connecting Rods and Pistons

Connecting rods and pistons are also separate internal engine components.

The 2018 Nissan Altima V6 parts catalog lists:

• Pistons
• Connecting rods
• Bearings
• Crankshaft  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

as separate components within the engine assembly.

A crankshaft listing should therefore not automatically imply that rods, pistons, bearings, or associated fasteners are included.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The exact package contents should be confirmed from the actual supplied product.

Crankshaft Pulley Not Automatically Included

The crankshaft pulley is another separate service component.

Nissan’s official catalog lists the 3.5L Altima pulley independently from crankshaft 12200-JA12B.

A Nissan Altima 3.5L Crankshaft 12200-JA12B should therefore not automatically be advertised as including:

• Crankshaft pulley
• Pulley bolt
• Flexplate
• Bearings
• Rear main seal
• Connecting rods
• Pistons
• Timing components  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

unless the actual package contains those parts.

Reasons for Crankshaft Replacement

Replacement may be required after engine damage involving:

• Worn crankshaft journals
• Scored bearing surfaces
• Main bearing failure
• Connecting-rod bearing failure
• Insufficient lubrication
• Mechanical engine damage
• Distorted or damaged crankshaft
• Engine rebuilding  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

A damaged crankshaft can sometimes be evaluated by an engine machine shop to determine whether it is serviceable.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

If the crankshaft cannot be reused within the required specifications, replacement may be necessary.

Inspection Before Installation

Whether the Nissan Altima 3.5L Crankshaft 12200-JA12B is new or used, the engine builder should inspect it before final assembly.

Relevant checks can include:

• Journal surfaces
• Main bearing areas
• Connecting-rod journal areas
• Threads
• Keyways
• Flange area
• Visible cracks
• Corrosion
• Shipping damage  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

A used crankshaft should not automatically be described as ready for installation without inspection.

Any machining or bearing selection should be handled by a qualified engine-rebuilding specialist.

Professional Installation Recommended

Crankshaft replacement requires major engine disassembly.

Installation typically involves removing and inspecting numerous internal engine components.

A professional engine builder should verify:  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

• Crankshaft condition
• Bearing clearances
• Correct bearing grades
• Connecting-rod condition
• Main bearing caps
• Lubrication passages
• Related seals
• Engine timing components  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The engine should be assembled according to the appropriate Nissan repair information.

Cross-Model Applications

OEM 12200-JA12B is not limited exclusively to the Altima.

Nissan-compatible fitment data also lists the crankshaft for selected:

• Nissan Maxima
• Nissan Murano
• Nissan Pathfinder  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

equipped with compatible VQ35DE engines.

Nissan’s official catalogs also show 12200-JA12B in Maxima and Murano engine assemblies.

However, cross-model compatibility should always be verified before using the crankshaft in another vehicle.

Suitable for B2B Automotive Buyers  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

The Nissan Altima 3.5L Crankshaft 12200-JA12B is suitable for:

Engine Rebuilding Workshops

For rebuilding damaged VQ35DE engines.

Nissan Repair Specialists

For OEM-number-specific mechanical repairs.

Automotive Parts Distributors

For supplying replacement internal engine components.

Vehicle Rebuilders

For restoring mechanically damaged Altimas.

Engine Parts Resellers  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

For stocking VQ35DE replacement components.

Export and Wholesale Buyers

Commercial quantities can be requested according to availability.

Information Required Before Ordering

For accurate fitment, provide:

• Vehicle year
• Nissan Altima model/trim
• VIN
• 3.5L VQ35DE confirmation
• Existing crankshaft part number
• Engine production information where available
• Required quantity
• Delivery destination  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Request a Quote

For pricing and availability of the Nissan Altima 3.5L Crankshaft 12200-JA12B, provide the vehicle year, VIN, VQ35DE engine confirmation, required quantity, and shipping destination.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft

Exact OEM status, new or used condition, included components, bearings, packaging, MOQ, availability, and freight terms should be confirmed for the actual crankshaft being supplied.  2015-2018 Nissan Altima 3.5L V6 Engine Crankshaft