Mercury Quicksilver Water Pump Impeller 19453T – 30–60 HP & Force 75 HP
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Mercury / Quicksilver Water Pump Impeller 19453T
Part Number: 19453T | Service Format: 47-19453T | GTIN: 745061127333
Genuine Mercury / Quicksilver OEM water pump impeller for selected Mercury, Mariner, and Force outboard cooling systems. This high-volume, long-vane impeller mounts on the driveshaft inside the lower-unit water pump housing and supplies cooling water to the engine. Mercury-engineered elastomer blades provide flexibility across the full range of marine operating temperatures, and the reinforced center insert is designed to resist tearing under load.
Specifications
- Brand: Mercury / Quicksilver
- Part Number: 19453T
- Service Format: 47-19453T
- Type: High-volume / long-vane water pump impeller
- Outside Diameter: ~3.125 in. (79.4 mm)
- Shaft / Hub Diameter: ~0.75 in. (19.1 mm)
- Weight: ~0.12 kg (0.26 lb)
- GTIN / UPC: 745061127333
- System: Lower-unit water pump / outboard cooling circuit
- Supersedes: 19453 (47-19453)
- Current OEM Number: 19453T (47-19453T)
Compatible Applications
Fitment must be confirmed by exact horsepower, model, and serial number. Mercury used different impellers across closely related 30–60 HP gearcases — the engine family alone is not sufficient to guarantee the correct part.
- Mercury 30–60 HP 3-cylinder FourStroke — serial 1C049739 & up
- Mercury 40–60 HP 4-cylinder FourStroke Carbureted — serial 0G765581–0T583552
- Mercury 40–60 HP 4-cylinder FourStroke EFI — serial 0T184587–1C050251
- Force 75 HP — serial 0E288000–0E344999
- Mercury / Mariner 45 Jet, 50, 55, and 60 HP 3-cylinder (selected serial ranges — verify before ordering)
Always cross-reference your engine model and serial number in the Mercury Parts Catalog before ordering.
When to Replace
- During scheduled water-pump service (typically every 2–3 seasons or 300 operating hours, per Mercury guidelines)
- Blades are cracked, permanently bent, torn, hardened, or missing material
- Reduced cooling-water flow or engine running hotter than normal
- Unknown service history — when in doubt, replace
Installation Notes
- Remove the lower unit and water-pump housing per the applicable Mercury service manual
- Inspect the pump housing, wear plate, impeller key, gaskets, and seals while the pump is disassembled — see related parts below
- The impeller key is a separate component and is not included with the bare impeller on applicable assemblies
- Lubricate impeller blades lightly with petroleum jelly before installation to ease break-in
Related Parts & Service Items
- Water Pump Kit 46-862914A13 — complete pump kit for Mercury MerCruiser applications
- Water Pump Cover-to-Face-Plate Gasket 43033
- Water Pump Base-to-Face-Plate Gasket 27-39625
- Water Pump-to-Gear-Housing Gasket 27-85610
- Mercury 40–60 HP FourStroke EFI 100-Hour Maintenance Kit 8M0232733
- Mercury Quicksilver 300-Hour Service Kit 8M0090559 – 40–60 HP FourStroke EFI
Parts Desk Insights
The 19453T is the go-to impeller for routine water-pump service on these 30–60 HP FourStroke and Force 75 HP platforms. Best use case: scheduled cooling-system service where you need the correct OEM impeller rather than a universal fit.
Common customer issue: ordering an impeller based on horsepower alone without checking the serial number. Mercury used several different impeller designs across overlapping HP ranges, and an impeller that looks identical can differ in vane length, hub diameter, and elastomer stiffness — all of which affect cooling volume and service life. Always verify via the serial-number parts diagram before ordering.
When servicing, replace the impeller as part of a complete pump service that includes the housing, wear plate, gaskets, and seals — not just the impeller alone. This avoids a second teardown shortly after.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.