2004 Hyundai Sonata engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All other modifications	11.06–14.75 lbf⋅ft11.06–14.75 lbf⋅ft15–20 N⋅m

expand_moreAuxiliary assemblies


Air-conditioning compressor	14.75–18.44 lbf⋅ft14.75–18.44 lbf⋅ft20–25 N⋅m
Air-conditioning compressor bracket	14.75–18.44 lbf⋅ft14.75–18.44 lbf⋅ft20–25 N⋅m

expand_moreAuxiliary drive belt deflection pulley


All other modifications	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m


Auxiliary drive belt tensioner	40.57–47.94 lbf⋅ft40.57–47.94 lbf⋅ft55–65 N⋅m
Left-hand thread

expand_moreAuxiliary drive belt tensioner


All other modifications	19.18–22.13 lbf⋅ft19.18–22.13 lbf⋅ft26–30 N⋅m

expand_moreCarburetion

expand_moreFuel-distributing pipe


All other modifications	14.75–22.13 lbf⋅ft14.75–22.13 lbf⋅ft20–30 N⋅m


Injection hoses	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Injection nozzle (injector)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreInjection pump


High-pressure pump	14.75–22.13 lbf⋅ft14.75–22.13 lbf⋅ft20–30 N⋅m

expand_moreCooling system

expand_moreCoolant pump

expand_moreAll other modifications


M6	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
M10	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m


Coolant pump pulley	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m
Tighten the screws crosswise.

expand_moreCylinder head

expand_moreCamshaft bearing


M6 screws	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
M8 screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreCylinder head screws

expand_moreAll other modifications


First stage	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Screws must be replaced.
Second stage	120°120°120°
Third stage	120°120°120°


Valve cover	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m
Gradually tighten screws crosswise.

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAll other modifications


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	90°90°90°

expand_moreCrankshaft central screws


All other modifications	136.45–143.82 lbf⋅ft136.45–143.82 lbf⋅ft185–195 N⋅m


Crankshaft pulley	22.13–25.08 lbf⋅ft22.13–25.08 lbf⋅ft30–34 N⋅m

expand_moreDrive plate


All other modifications	51.63–59 lbf⋅ft51.63–59 lbf⋅ft70–80 N⋅m

expand_moreFlywheel


All other modifications	51.63–59 lbf⋅ft51.63–59 lbf⋅ft70–80 N⋅m
Screws must be replaced.

expand_moreMain bearing

expand_moreAll other modifications


M8	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreM10


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Second stage	120°120°120°

expand_moreEngine control


Balance shaft timing chain guide rail	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
Balance shaft timing chain tension rail	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreCamshaft timing chain guide rail


All other modifications	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m


Camshaft timing chain slip rail	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
Camshaft timing chain tensioner	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreCamshaft timing chain tensioning rail


All other modifications	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m


Camshaft timing gear	95.88–103.26 lbf⋅ft95.88–103.26 lbf⋅ft130–140 N⋅m

expand_moreControl drive chain guide rail

expand_moreTiming chain


Oil pump	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreDrive belt tensioner device


On the engine block	36.88–40.57 lbf⋅ft36.88–40.57 lbf⋅ft50–55 N⋅m
Tensioning screws	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m


Drive chain balance shaft tensioner	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreInlet camshaft wheel


All other modifications	40.57–47.94 lbf⋅ft40.57–47.94 lbf⋅ft55–65 N⋅m


Oil pump drive chain tensioner	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m

expand_moreOutlet camshaft wheel


All other modifications	40.57–47.94 lbf⋅ft40.57–47.94 lbf⋅ft55–65 N⋅m

expand_moreTiming case cover


M6	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m
Use sealant.
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Use sealant.


Toothed belt guard	5.9–8.85 lbf⋅ft5.9–8.85 lbf⋅ft8–12 N⋅m

expand_moreEngine lubrication


Oil cooler	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Oil drain plug	25.81–33.19 lbf⋅ft25.81–33.19 lbf⋅ft35–45 N⋅m
Oil filter housing	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Oil pump chain wheel	14.75–16.23 lbf⋅ft14.75–16.23 lbf⋅ft20–22 N⋅m

expand_moreOil sump


M6	7.38–8.85 lbf⋅ft7.38–8.85 lbf⋅ft10–12 N⋅m
Use sealant.
M8	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use sealant.

expand_moreEngine management


Camshaft sensor	2.95–4.43 lbf⋅ft2.95–4.43 lbf⋅ft4–6 N⋅m
Crankshaft sensor	2.95–4.43 lbf⋅ft2.95–4.43 lbf⋅ft4–6 N⋅m
Glow plugs	7.38–10.33 lbf⋅ft7.38–10.33 lbf⋅ft10–14 N⋅m
Knock sensor	11.8–17.7 lbf⋅ft11.8–17.7 lbf⋅ft16–24 N⋅m

expand_moreEngine mounting

expand_moreEngine bracket


All other modifications	33.19–40.57 lbf⋅ft33.19–40.57 lbf⋅ft45–55 N⋅m

expand_moreEngine mounting


Nuts on chassis	44.25–59 lbf⋅ft44.25–59 lbf⋅ft60–80 N⋅m
On engine bracket	36.88–47.94 lbf⋅ft36.88–47.94 lbf⋅ft50–65 N⋅m


Subframe	103.26–118.01 lbf⋅ft103.26–118.01 lbf⋅ft140–160 N⋅m
Torque arm	36.88–47.94 lbf⋅ft36.88–47.94 lbf⋅ft50–65 N⋅m

expand_moreExhaust system


Heat shields	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreExhaust manifold


All other modifications	22.13–25.81 lbf⋅ft22.13–25.81 lbf⋅ft30–35 N⋅m


Exhaust pipe	29.5–44.25 lbf⋅ft29.5–44.25 lbf⋅ft40–60 N⋅m

expand_moreIgnition system


Spark plugs	14.75–22.13 lbf⋅ft14.75–22.13 lbf⋅ft20–30 N⋅m

expand_moreStart system


Starter	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2004 Hyundai Sonata user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Hyundai warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Hyundai Sonata service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2004 Hyundai Sonata you're not only saving money, but also also improving your technical skills and learning something new.

2004 Hyundai Sonata generations

In 2004 Hyundai offered 2 generations of the Sonata. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

2004 Hyundai Sonata Fifth generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

2004 Hyundai Sonata generations

Fourth generation facelift

Hyundai Sonata Fifth generation model years

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