John Deere X748: Identify Your Tractor Before Buying Parts

Updated October 25, 2026

For a used John Deere X748, start with:

• the full tractor PIN;
• the engine plate;
• the equipment actually fitted.

Use those records to choose documentation and check parts. A model name in an advertisement is not enough to choose a deck belt, engine service kit or replacement seat assembly.

Match the diesel manual to your machine

Two Deere manual editions show why the engine record matters:

Manual	Printed PIN coverage starts at	Engine specification in that edition
OMM161727H9	050001	3TNV76, three cylinders, 1116 cc
OMM164430F1	070001	3TNM72, three cylinders, 904 cc

Both describe liquid-cooled diesels. These are edition-scoped records, not an independently established engine-change boundary. OMM161727 identification, specification; OMM164430 identification, specification.

Copy the complete PIN rather than only its final digits, then record the engine plate separately. If a listing and a plate disagree, keep both photographs and resolve the discrepancy before choosing a manual or service kit. Leave an unreadable field marked unknown; a guessed identifier defeats the check.

Build a record for the tractor in front of you

Use this worksheet when you view a machine or prepare a parts inquiry. These are recommended records, not a substitute for the applicable operator's manual.

Record	What to capture	What the record should settle
Tractor	Complete PIN and a legible plate photograph	Which tractor application the supplier checked
Engine	Model and serial information as printed on its plate	Which engine the service items must match
Mower deck	Identification label, fitted components and overall photographs	Which deck the belt, blades or spindle inquiry concerns
Seat	Controls, underside, rails, mounting and any readable labels	Whether the inquiry is for upholstery or a larger assembly
History	Available invoices, service records and modification notes	Which claims have paperwork and which remain unverified

Keep the original photographs with your notes. A typed transcription is easier to send, while the photograph lets a supplier check a doubtful character. Ask the seller about missing information. Do not copy an answer from another X748 listing.

Identify the deck before choosing mowing parts

Treat the fitted deck as its own parts inquiry. Do not choose a belt or blade from a claimed cutting width alone. Send its label photograph, the tractor PIN and the part being replaced; ask the supplier to identify the applicable diagram and OEM number.

For a used machine sold with loose attachments, make a separate list of what is included and what is demonstrated as installed. Ask for the relevant attachment identification and installation documentation. Keep an unverified attachment outside the purchase plan until its application and required fittings are established. This guide does not certify a deck or attachment combination from a photograph.

X748 Special Edition: seat controls and provenance

OMM161727H9 distinguishes standard slide-rail/suspension adjustments from the Special Edition seat:

• left fore/aft lever;
• front weight knob and gauge;
• right backrest knob;
• left lumbar adjustment;
• adjustable armrests.

A matching layout does not establish factory SE provenance. Seat comparison, lumbar and armrest controls.

Compare the controls on the fitted seat, then photograph its underside and mounting. Ask two separate questions: what assembly is installed now, and what supports the seller's original Special Edition claim? An original order record may help with the second question; current seat photographs help answer the first. Do not use armrests, wheel appearance or an SE description as a replacement-part number.

OEM filter references to check

OMM164430F1 lists:

• primary air element M113621;
• secondary M123378;
• fuel filter M801101;
• engine oil filter M806418;
• transaxle filter AM131054.

Deere requires the machine or attachment identifier when ordering and notes that numbers can change or differ outside the USA. Replacement-parts page.

Give the supplier these reference numbers and your machine record, then ask for a current application check. They do not certify a complete kit, an aftermarket substitute or a listing with a similar number. Ask about engine filters and transaxle service separately, so the supplier can identify the item being matched.

• 

  John Deere M806418 engine oil filter

  This listing is for the John Deere M806418 engine oil filter. Confirm the current Deere application against your tractor PIN and fitted engine before ordering; this is not a complete service kit.

  View on Amazon USA↗

As an Amazon Associate I earn from qualifying purchases.

Prepare a parts inquiry before ordering

Name the job first: engine servicing, a damaged deck component or a seat repair. Then send a short inquiry with the corresponding records:

Tractor PIN: ___. Engine identification: ___. Deck or seat identification, if relevant: ___. Part needed and reason: ___. Please confirm the applicable OEM number, any serial restriction and any additional fittings required for this assembly.

For an Amazon USA item, compare the actual listing's manufacturer and part number with that confirmed application. Keep the seller's compatibility statement separate from the OEM application check. A service kit needs an item-by-item check; a title mentioning X748 does not settle every item inside it.

Save the application response alongside the order details. If the response cannot connect the item to your identifiers, pause that purchase and obtain the missing record. The record should show why the chosen part matches your machine. Product count alone does not provide that check.