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2018 Nissan Altima · Water pump replacement
2018 Nissan Altima water pump replacement cost
A 2018 Nissan Altima water pump replacement typically costs $295 to $830 at an independent shop, parts and labor included across its engine options. The water pump itself runs $45 to $100, and the job takes 2 to 4 hours. Prices updated September 2026.
Estimated cost, selected engine
$295 to $580
Charlotte, NC area
Prices updated September 2026
Which engine? They price differently, so pick yours for a closer number.
Water pump (part)
$45 to $100
Labor (2 to 4 hours)
$220 to $675
Coolant and gasket supplies
$25 to $60
2018 Nissan Altima water pump replacement: parts and labor
Labor runs $220 to $675 (the job takes 2 to 4 hours at typical independent-shop rates), and the water pump itself typically costs $45 to $100 for the 2018 Nissan Altima, plus $25 to $60 in coolant and gasket supplies. Prices updated September 2026.
| Engine | Parts | Labor | Estimated total |
|---|---|---|---|
| 2.5L I4 | $50 to $100 | $220 to $420 (2.0 to 2.8 hrs) | $295 to $580 |
| 3.5L V6 | $45 to $95 | $350 to $675 (3.2 to 4.5 hrs) | $420 to $830 |
Genuine Nissan pumps list at $189 (2.5L, 21010-3TA0B) and $201 (3.5L, 21010-JA10A/JA11A) versus $45-100 for OE-tier aftermarket, and dealer labor at $150-200/hr pushes the chain-driven V6 job to roughly $900-1,200, in line with YourMechanic's published $884-1,153 shop/dealer range for the 2018 V6. Expect a dealer 2.5L quote around $600-800 for the same external pump an independent installs for half that.
Where these numbers come from
- Estimate ranges: a hand-verified research pass for this exact vehicle and repair, cross-referenced across 8 independent sources (parts retailers, labor guides, and published shop pricing), completed September 2026.
- Recall and complaint data: NHTSA (National Highway Traffic Safety Administration) records for the 2018 Nissan Altima specifically, filtered to cooling system relevance and refreshed daily from the federal API.
- Local prices: real, accepted quotes from verified Fixxr marketplace jobs, published per metro once five verified jobs of this type have closed. Never estimates dressed up as transactions.
Not included in the estimate: Diagnosis and cooling-system pressure-test time to confirm the pump is the leak source, Commonly bundled parts: thermostat, radiator hoses, and (on the 2.5L) the drive belt that is already removed for access, A full coolant flush or chemical clean beyond the drain-and-refill included here, Sales tax, shop supplies fees, and coolant disposal fees, Any timing chain, tensioner, or front cover work found needed on the V6 once inside.
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Overheating can be the radiator, thermostat, water pump, or a leak. Describe what your car is doing and our free diagnostic tool narrows it down before you spend a dollar.
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Get connected with a mechanicHow your cooling system works
The water pump is one piece of a loop. Here is how the parts work together, so you understand exactly what your car is doing and why.
Found a puddle? What the color tells you
Bright green
Classic coolant leak. Find the source before it overheats.
Orange / pink
What most modern vehicles use (OAT). Same urgency as green.
Rusty brown
Old, corroded coolant. Overdue for a flush.
Milky / oily
Coolant mixing with oil, like a coffee milkshake. Can mean a head gasket. Serious.
What a water pump replacement is like on the 2018 Nissan Altima
The two engines in the 2018 Altima are almost opposite jobs, which is why the table splits them. On the 2.5L QR25DE four cylinder, the water pump is an external, belt-driven unit that bolts to a pump housing on the block. The factory-style procedure is straightforward: drain the coolant, pull the right front wheel and splash shield, remove the drive belt and pump pulley, swing the alternator and its bracket out of the way, and unbolt the pump from its housing. Published book time is about 2.5 hours, and independent shops routinely bill 2.0 to 2.8 hours including the refill and air-bleed cycle.
The 3.5L VQ35DE V6 is a different animal: its pump lives inside the front timing cover and is driven by the timing chain. The service procedure has the engine set to TDC, the drive belt and idler pulleys removed, the engine supported so the right front engine mount and bracket can come off, the IVT control valve cover and tensioner cover removed, a stopper pin inserted in the chain tensioner, and the crank rotated to slack the chain so the pump can be jack-screwed and rotated out through an access hole. Book time is 3.2 hours; real invoices commonly land between 3.5 and 4.5 hours because the O-rings must seat perfectly (they should be lubricated with coolant on install, since a dry O-ring can shear and start a leak behind the cover).
Typical failure mode on both engines is weep-hole seepage and bearing noise rather than sudden death, usually showing up between roughly 100,000 and 150,000 miles. Look for dried blue or pink coolant crust at the weep hole and a low reservoir. On the V6, a growling pump bearing is sometimes misdiagnosed as timing chain noise because the pump rides on the chain. Both engines use Nissan Blue long-life coolant; running the system low from a slow pump leak is what turns a $500 job into a head gasket conversation, so leaks are worth pressure-testing early.
OE part numbers are easy to verify: the 2.5L pump is Nissan 21010-3TA0B (fits 2013-2018 Altima QR25DE, MSRP $189.26, about $131 from online genuine-parts sellers), and the 3.5L pump is 21010-JA10A, superseded to 21010-JA11A (fits 2007-2018 Altima VQ35DE, MSRP $200.73, about $136 online). Quality aftermarket coverage is deep and cheap: AISIN, an OE-tier Japanese supplier, sells WPN-709 for the 2.5L at $88.79 and WPN-702 for the V6 at $70.99 at RockAuto, with GMB, Gates, ACDelco Gold, and Beck/Arnley all under $75. Store brands with lifetime warranties (Duralast AWP-2140 at $98.99, O'Reilly Import Direct CP7174 at $90.99) are on the shelf same-day.
When a dealer quotes $900 to $1,200 on the V6, most of that gap is real labor plus genuine-parts markup, and marketplace data backs it up: YourMechanic pegs the 2018 V6 shop and dealer range at $884 to $1,153. But on the 2.5L, a quote north of $700 is mostly parts inflation; estimator sites like RepairPal price this job with parts at $417 to $458 when the genuine pump lists for $189 and an AISIN unit costs under $90. Neither 2018 engine uses a timing belt (both are chain-driven), so there is no legitimate 'timing kit while we are in there' upsell; the sensible add-ons are a drive belt on the 2.5L (it is already off) and a thermostat if the car is past 120k. There is no NHTSA recall touching the cooling system on the 2018 Altima; this generation's well-known service campaigns center on the CVT, not the water pump.
Estimate note: these are researched independent-shop ranges, not a guaranteed quote. The only exact number is one from a shop that has seen your car.
Frequently asked questions
How much does a 2018 Nissan Altima water pump replacement cost?
A 2018 Nissan Altima water pump replacement typically runs $295 to $830 at an independent shop, parts and labor included. The water pump itself is $45 to $100, labor makes up most of the rest, and the job takes 2 to 4 hours.Why does the price change with the engine?
The 2018 Nissan Altima came with more than one engine, and they do not share the same part or the same access. A tighter engine bay or extra teardown adds labor hours, and the part price moves too. Sites that show one national number flatten that out. Pick your engine on the estimate above for a closer figure.Is it always the water pump when my Nissan overheats?
No. Overheating can also be a stuck thermostat, a clogged or leaking radiator, a failed cooling fan, or simply low coolant. What points specifically at the water pump is coolant dripping from the weep hole under the pump, a grinding or whining noise from the front of the engine, or wobble in the pump pulley. Because these causes look identical from the driver's seat, get a real diagnosis before approving the repair.Can I drive my Nissan with a bad water pump?
Only far enough to get it looked at. A failing pump stops circulating coolant, the engine overheats, and driving an overheating Nissan risks a warped cylinder head or a blown head gasket, a $3,000 to $8,000 repair on top of the pump. If the temperature gauge climbs or you see steam, pull over and let it cool. If it keeps overheating, tow it.Should the thermostat be replaced at the same time?
Usually yes, and most shops will suggest it. The cooling system is already drained and opened for the water pump, so the thermostat adds only a small part cost with little extra labor, and a stuck thermostat is one of the most common follow-on failures. Replacing both in one visit avoids paying the teardown labor twice.How long does a water pump last?
Most factory water pumps last roughly 100,000 to 150,000 miles. The usual failures are the shaft seal, which starts seeping coolant from the weep hole, and the bearing, which gets noisy before it lets go. Regular coolant changes protect the seal and are the cheapest way to extend pump life.Are there recalls on the 2018 Nissan Altima?
Yes, NHTSA lists 2 recalls for the 2018 Nissan Altima. Recall repairs are done free of charge at a franchised dealer for that brand, so it is worth checking your VIN before paying a shop for related work.
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