John Deere RE531195 Fuel Injector Inlet Connector / Injector Tube (≈150 Mm) | Precision High-Pressure Connector For 6068 & 6090 Engines – Fitment & Specs

In high-pressure diesel fuel systems, the smallest "link" often decides whether the whole engine feels tight-or troublesome. Customers sometimes describe RE531195 as a connecting rod (连接杆), but online OEM and aftermarket catalogs consistently identify RE531195 as a fuel injector inlet connector fitting / injector connector tube (pressure pipe)-the rigid connector that carries high-pressure fuel to the injector on many John Deere engine platforms.

That distinction matters because this part isn't a generic tube you can "make fit." It sits in a zone where fuel is delivered in precise pulses, at high pressure, and under vibration and heat. When the connector tube is worn, incorrectly seated, or substituted with a poor-quality match, you can see symptoms that mimic injector or pump problems: hard starting, rough idle, fuel smell, and unstable cylinder contribution.

RE531195 is typically sold as a Fuel Injector Inlet Connector Fitting in John Deere's own parts shop.
Aftermarket channels also call it an engine fitting or pressure pipe and market it for John Deere equipment families tied to 6068 / 6090 engines (a common search intent phrase).

Think of it like a "precision bridge":

▶ Seals high-pressure fuel delivery from rail/pump plumbing to the injector inlet
▶ Maintains consistent flow geometry so injection events remain repeatable
▶ Withstands vibration + thermal cycling without loosening or micro-leaks

Even a tiny sealing imperfection here can introduce performance issues that waste diagnostic time-because the engine symptoms can look electrical, when the root cause is mechanical sealing or pressure stability.

 

Because Deere parts can be shared across multiple machines, the strongest confirmation is always part-number matching and comparing the old tube's shape/ends.

That said, multiple listings associate RE531195 with John Deere equipment using 6068 / 6090 engines and provide broad application lists (tractors, harvesters, and other platforms).
Aftermarket brands also label it explicitly as an Injector Tube (6090) and publish the tube length as 150 mm, which aligns with John Deere's published 15.24 cm length dimension on its UK shop listing.

For buyers who need quick confirmation before purchase, published dimensions are very helpful:

Length: 15.24 cm (152.40 mm)

Height: 2.159 cm (21.59 mm)

Weight: 0.136 kg

You may also see it sold as a "pressure pipe" or "injector connector," sometimes bundled or listed in quantities (e.g., "6X"), but your independent site should make it crystal clear whether you're selling single piece or multi-pack.

 

 

Many workshop comebacks happen after injector replacement-not because the injector was wrong, but because the inlet connector/tube wasn't renewed or wasn't seated perfectly. A fatigued connector can:

◆ create micro-leaks that lower effective injection pressure at the injector inlet
◆ distort spray behavior and cylinder balance (felt as vibration/roughness)
◆ cause fuel odor or wetness that attracts dirt and accelerates wear
◆ trigger repeated rework, wasting labor on "ghost faults"

Replacing the correct RE531195 restores a clean, stable mechanical connection-often improving consistency immediately, especially on engines where pressure and timing are tightly controlled.

 

To reduce returns and improve outcomes, include a short, practical checklist:

Before installation
• Confirm part number RE531195 and compare end geometry to the removed connector
• Clean mating surfaces; contamination is the enemy of sealing
• Inspect adjacent lines/fittings for thread damage or distortion

After installation
• Torque to OEM procedure (avoid over-torque which can deform sealing surfaces)
• Recheck for seepage after the first heat cycle
• If diagnosing a drivability issue, rule out air ingress and fuel contamination upstream

 

 

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