Water Pump Assembly ME993932 For MITSUBISHI FUSO 4M50 4M51 Canter FE7 FE8 — OEM Verified Direct Fit, Cross-Ref ME994451 ME991300 LWP1160

The Water Pump Assembly with OEM number ME993932 is a verified direct-fit replacement for MITSUBISHI FUSO 4M50 and 4M51 (4.9L diesel) engines, used across Canter FE7 and FE8 medium-duty truck platforms from the mid-2000s onward. This pump is a critical component of the engine cooling system, responsible for circulating coolant through the engine block, cylinder head, and radiator to maintain stable operating temperature under commercial load.

The ME993932 sits within a densely cross-referenced OEM and aftermarket family. Independent parts catalogs confirm interchangeability with ME994451, ME994522, ME991300, ME995072, ME993898, ME993965, and the Luzar LWP1160 aftermarket reference. The OE reference ME993932 is listed as DISCONTINUED by at least one FUSO parts supplier, which typically indicates supersession — the active service part may carry a different suffix, but the functional fitment across the 4M50/4M51 Canter platform remains consistent.

• Engine & Chassis Coverage Verified: Confirmed for FUSO CANTER FE7 (02–12) and FE8 (02–12) with 4M50 / 4M51 engines, and for Canter 4.9TD 4M50 applications from 2005 onward, including 4M50-T5, 4M50-3AT7, and 4M50-T variants.
• Cross-Reference Density Verified: Confirmed interchange set includes ME994451, ME994522, ME991300, ME995072, ME993898, ME993965, ME993932, plus aftermarket LWP1160 (Luzar), GWM-97A (GMB), TM100W (Tomitomo), STM1622 (Sat), WPP33361(B) (LUS).
• Discontinued / Supersession Status Verified: ME993932 is marked "DISCONTINUED" by S1 Parts Center (FUSO OEM supplier), indicating the active service reference may have moved to a suffix or sister number. The functional fitment across the 4M50/4M51 Canter platform remains the same.
• Gasket Variant Verified: At least one supplier lists the pump as "с прокладкой" (with gasket) under the ME9945 series cross-reference, confirming that gasket-included configurations exist in the supply chain.
• Cooling-System Role Verified: OEM description confirms the assembly includes the impeller, housing, and bearings, and that its failure leads to rapid engine overheating and potential costly damage.

• Coolant leaking from the pump weep hole or housing: The most common failure mode. A worn shaft seal allows coolant to escape, often visible as crusty residue or drips near the front of the engine.
• Overheating at idle or under load: A failing impeller or seized bearing reduces coolant circulation, causing temperature spikes especially in stop-and-go traffic or when the A/C is on.
• Whining, grinding, or rumbling from the front of the engine: Worn pump bearings produce rotational noise that changes with engine speed.
• Coolant bubbling / poor circulation: A compromised impeller (eroded or detached) prevents effective coolant flow, leading to localized hot spots and valve-train noise.
• Coolant loss without an obvious external leak: Internal seal failure can allow coolant to enter the bearing cavity or weep slowly, producing unexplained reservoir level drops.
• Fan or belt misalignment: A worn pump shaft or bearing can introduce play that affects fan clutch or belt alignment, accelerating belt wear.

Confirmed Fitment Sources: GoTrucky confirms Isuzu NPR (2005–2009, 2011–2017 with 4HK1-TC / 4JJ1-TC), NPR-HD (2008–2018 with 4HK1-TC), NQR (2005–2018 with 4HK1-TC), and NRR (2005–2021 with 4HK1-TC). Raybestos confirms Isuzu N-Series (2004–2009, 2016–2018), Chevy Low Cab Forward (2016–2017), and W-Series (2004–2009). Fab Heavy Parts confirms NPR, NQR, ELF, 700P, and NPR75 with 4HK1 / 4HF1 engines.

Each unit undergoes 100% pressure testing before packaging. Manufacturing conforms to OEM specification standards for hydraulic brake components.

1. 1Safety first: Park on level ground, engage parking brake, and chock front wheels. Wear safety glasses and gloves.
2. 2Remove wheel and drum: Loosen lug nuts, raise the vehicle, remove the wheel, and extract the brake drum. Inspect drum and shoes for wear.
3. 3Disconnect hydraulic line: Place a drain pan underneath, disconnect the brake line from the wheel cylinder, and plug the line to prevent contamination.
4. 4Remove old cylinder: Unbolt the wheel cylinder from the backing plate. Note the orientation of the push rods and the auto-adjuster linkage for correct reassembly.
5. 5Clean mounting surface: Remove rust, dirt, and debris from the backing plate mounting area.
6. 6Install new cylinder: Position the new wheel cylinder (8-97358878-0) onto the backing plate and tighten mounting bolts to specification.
7. 7Reconnect brake line: Connect the hydraulic line. Tighten to thread specification without over-torquing.
8. 8Install shoes and drum: Reinstall brake shoes, adjuster components, and drum. Perform the automatic adjuster initialization procedure per the workshop manual.
9. 9Bleed the brake system: Fill the master cylinder reservoir with DOT 3 or DOT 4 brake fluid. Bleed until clear, bubble-free fluid flows. Note: This unit is supplied without a bleeder screw in standard configuration — ensure your bleeding method is compatible.
10. 10Test brakes: Pump the pedal to seat the shoes, check for leaks, and road-test at low speed before returning the vehicle to service.

• Inspect wheel cylinders at every 40,000–50,000 km or during any brake service.
• Replace wheel cylinders in axle pairs — replacing only one side can cause uneven braking and pull to one side.
• Flush brake fluid every 2 years or according to manufacturer interval.
• Verify auto-adjuster operation during every brake inspection — seized adjusters can cause drag or excessive pedal travel.

• Standard packing: Individual box with protective packaging; wooden pallet available for bulk orders.
• Package contents: 1 × Rear Left Brake Wheel Cylinder (installation hardware not included; bleeder screw not included in standard configuration).
• Set options: Left side only, or left + right pair — specify at inquiry.
• Suitable for: Brake system repair shops, fleet maintenance departments, spare parts distributors, and export wholesalers.
• Related parts available: Rear right wheel cylinder (ADZ94433 counterpart), rear left forward cylinder, brake shoes, brake drums, wheel cylinder repair kits, brake fluid (DOT 3/DOT 4), and brake hardware kits.