The Multiquip 03781300 Big End Bearing 2G40 is a genuine OEM component designed for RW1404, RW1404MR, and RW1504HF RAMMAX walk-behind rollers. Sourced directly from Multiquip, this bearing meets the original engineering tolerances specified for these machines. It is a direct-fit replacement for RW1404MR units running serial number 326075 and up, as well as RW1504HF units up to serial number, ensuring correct installation without guesswork. Keeping this bearing in good condition is essential to smooth crankshaft operation and overall engine reliability on your roller.
Key Features
- OEM-Grade Tolerance Precision — Manufactured to the exact dimensional and load-bearing specifications required by the 2G40 engine, ensuring proper crankshaft-to-connecting-rod interface.
- Direct-Fit Installation — Engineered to seat correctly in the big end of the connecting rod without machining or shimming, streamlining your engine rebuild.
- Confirmed Fitment for RAMMAX Roller Models — Compatible with RW1404, RW1404MR (S/N 326075 and up), and RW1504HF (up to S/N 1534188) walk-behind rollers.
- Engine Longevity Under Load — A correctly fitted big end bearing maintains the oil film between the crankshaft journal and connecting rod, preventing metal-on-metal wear during compaction cycles.
- Genuine Multiquip OEM Part — Supplied as an authentic Multiquip replacement, so you get the same bearing that came in the machine at the factory — not a generic substitute.
The big end bearing sits at the lower end of the connecting rod, where it wraps around the crankshaft journal inside the engine. Its job is to allow the connecting rod to rotate smoothly around the crankshaft as the piston moves up and down, while a thin film of pressurized oil prevents direct metal contact. When this bearing wears or fails, you will typically notice a deep knocking sound from the engine, a drop in oil pressure, and eventually seizure if the machine continues to run. Replacing a worn big end bearing promptly restores correct crankshaft clearances and protects the rest of the engine from secondary damage.
Part Details
| Part Number | 03781300 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Big End Bearing 2G40 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Rollers | RW1404MR S/N 326075 and up |
| Rollers | RW1504HF up to S/N 1534188 |
| Rollers | RW1404 |
| Rollers | RW1404MR |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
