Excavator Starter Motors

12V 1.6kW 16-Tooth Starter Motor 31200-5J2-A51 for Acura MDX

Q: What numbers are documented for 31200-5J2-A51?

Primary Part Number: 31200-5J2-A51. Manufacturer / OEM Reference: 31200-5J2-A52. Manufacturer / OEM Reference: 5J2. Manufacturer / OEM Reference: SM-77002. Manufacturer / OEM Reference: SM-7700299. Catalog Cross-Reference: 16015N. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 31200-5J2-A51 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

Brand illustration · Exact product photo available on request.

OEM / reference31200-5J2-A51

Specification12V 1.6kW Starter Motor

Catalog ID91003840

Starter motor identified by primary reference 31200-5J2-A51. The exact-reference catalog records design PMOSGR, voltage 12V, power 1.6kW, pinion teeth 16, rotation CCW. Recorded application: Acura MDX 2016-2020; Engine V6 3.5L 3471cc J35Y5. Confirm the complete number, mounting, terminals, rotation and pinion teeth against the original starter before ordering. The displayed EexcavaStart package is a catalog illustration, not a photograph of the supplied product.

Product Type: Starter Motor
Design: PMOSGR
Voltage: 12V
Power: 1.6kW
Pinion Teeth: 16
Rotation: CCW
Condition: New replacement part
Gallery Representation: EexcavaStart neutral packaging illustration; exact product photo available on request

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Primary identity used for this catalog page	31200-5J2-A51
Manufacturer / OEM Reference	Listed under the exact-reference catalog	31200-5J2-A52
Manufacturer / OEM Reference	Listed under the exact-reference catalog	5J2
Manufacturer / OEM Reference	Listed under Mitsuba	SM-77002
Manufacturer / OEM Reference	Listed under the exact-reference catalog	SM-7700299
Catalog Cross-Reference	Exact-reference catalog number	16015N

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

31200-5J2-A51

Manufacturer number

31200-5J2-A52
5J2
SM-77002
SM-7700299

Other documented relationship

16015N

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

12V 1.6kW Starter Motor

Category: Excavator Starter Motors
Catalog ID: 91003840
Photo views: 1

Before ordering

Confirm these details

Confirm voltage and power rating against the original starter nameplate.
Compare mounting-hole pattern, flange position and overall body orientation.
Confirm pinion tooth count and rotation where those values are specified.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

9 model references

Acura MDX: 2016-2020; Engine V6 3.5L 3471cc J35Y5
Acura TLX: 2015-2020; Engine V6 3.5L 3471cc J35Y6
Honda Odyssey: 2018-2019; Engine V6 3.5L 3471cc J35Y7
Honda Passport: 2019-2025; Engine V6 3.5L 3471cc J35Y6
Honda Pilot: 2016-2022; Engine V6 3.5L 3471cc J35Y6
Honda Ridgeline: 2020-2025; Engine V6 3.5L 3471cc J35Y6
Honda Ridgeline: 2026; Engine V6 3.5L 3471cc
Catalog coverage: Acura (2015-2019) ** Honda (2016-2019)
Fitment limitation: Confirm the exact number, nameplate, mounting, terminal layout, rotation and pinion teeth against the original starter before shipment

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 31200-5J2-A51

Which machines use 31200-5J2-A51?

Recorded compatible model references include Acura MDX: 2016-2020; Engine V6 3.5L 3471cc J35Y5, Acura TLX: 2015-2020; Engine V6 3.5L 3471cc J35Y6, Honda Odyssey: 2018-2019; Engine V6 3.5L 3471cc J35Y7, Honda Passport: 2019-2025; Engine V6 3.5L 3471cc J35Y6, Honda Pilot: 2016-2022; Engine V6 3.5L 3471cc J35Y6, Honda Ridgeline: 2020-2025; Engine V6 3.5L 3471cc J35Y6, Honda Ridgeline: 2026; Engine V6 3.5L 3471cc, Catalog coverage: Acura (2015-2019) ** Honda (2016-2019) and 1 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 31200-5J2-A51?

Manufacturer number: 31200-5J2-A52, 5J2, SM-77002, SM-7700299.

How do I confirm 31200-5J2-A51 before ordering?

Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.