2005 Alfa Romeo 156 GTA fastener tightening specifications

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Condition	Value

expand_moreEngine tightening torques

expand_moreAir intake system

expand_moreIntake manifold


M6	4.43–6.64 lbf⋅ft4.43–6.64 lbf⋅ft6–9 N⋅m
M8	14.01–16.96 lbf⋅ft14.01–16.96 lbf⋅ft19–23 N⋅m

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


M8	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m

expand_moreAuxiliary drive belt tensioner


M8	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m


Auxiliary drive belt tensioner	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m

expand_moreAlternator


M10	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
M12	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m


Servo steering pump	16.96–20.65 lbf⋅ft16.96–20.65 lbf⋅ft23–28 N⋅m

expand_moreCooling system


Coolant pump	5.16–6.64 lbf⋅ft5.16–6.64 lbf⋅ft7–9 N⋅m
Coolant pump pulley	5.16–6.64 lbf⋅ft5.16–6.64 lbf⋅ft7–9 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


M8	13.28–14.75 lbf⋅ft13.28–14.75 lbf⋅ft18–20 N⋅m

expand_moreCylinder head screws


First stage	17.7–19.18 lbf⋅ft17.7–19.18 lbf⋅ft24–26 N⋅m
Grease nuts, thread, and washers with engine oil.
Second stage	228–232°228–232°228–232°


Valve cover	10.33–12.54 lbf⋅ft10.33–12.54 lbf⋅ft14–17 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreM9


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	50°50°50°

expand_moreCrankshaft central screws

expand_moreLeft-hand thread


M28	168.16–185.87 lbf⋅ft168.16–185.87 lbf⋅ft228–252 N⋅m

expand_moreFlywheel


M10	85.56–95.15 lbf⋅ft85.56–95.15 lbf⋅ft116–129 N⋅m
M12	89.25–109.9 lbf⋅ft89.25–109.9 lbf⋅ft121–149 N⋅m

expand_moreMain bearing

expand_moreM12


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Second stage	79°79°79°

expand_moreEngine control

expand_moreCamshaft drive belt deflection pulley


M10	20.65–23.6 lbf⋅ft20.65–23.6 lbf⋅ft28–32 N⋅m


Drive belt tensioner device	13.28–14.75 lbf⋅ft13.28–14.75 lbf⋅ft18–20 N⋅m

expand_moreInlet camshaft wheel


M10	50.15–61.96 lbf⋅ft50.15–61.96 lbf⋅ft68–84 N⋅m
M12	53.1–64.91 lbf⋅ft53.1–64.91 lbf⋅ft72–88 N⋅m

expand_moreOutlet camshaft wheel


M10	50.15–61.96 lbf⋅ft50.15–61.96 lbf⋅ft68–84 N⋅m
M12	53.1–64.91 lbf⋅ft53.1–64.91 lbf⋅ft72–88 N⋅m

expand_moreToothed belt tensioning roller


M8	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m


Toothed belt tightener	33.19–40.57 lbf⋅ft33.19–40.57 lbf⋅ft45–55 N⋅m

expand_moreEngine lubrication


Oil drain plug	33.19–40.57 lbf⋅ft33.19–40.57 lbf⋅ft45–55 N⋅m
Oil pump	33.19–40.57 lbf⋅ft33.19–40.57 lbf⋅ft45–55 N⋅m
Oil pump chain wheel	33.19–40.57 lbf⋅ft33.19–40.57 lbf⋅ft45–55 N⋅m
Oil sump	10.33–12.54 lbf⋅ft10.33–12.54 lbf⋅ft14–17 N⋅m

expand_moreEngine management


Camshaft sensor	5.16–5.9 lbf⋅ft5.16–5.9 lbf⋅ft7–8 N⋅m
Lambda sensor	30.24–36.88 lbf⋅ft30.24–36.88 lbf⋅ft41–50 N⋅m

expand_moreEngine mounting

expand_moreEngine bracket

expand_moreOn the engine block


M10	30.98–38.35 lbf⋅ft30.98–38.35 lbf⋅ft42–52 N⋅m
M12	64.91 lbf⋅ft64.91 lbf⋅ft88 N⋅m
M16	75.23–92.93 lbf⋅ft75.23–92.93 lbf⋅ft102–126 N⋅m
M8	14.01–16.96 lbf⋅ft14.01–16.96 lbf⋅ft19–23 N⋅m

expand_moreEngine mounting


On chassis	22.86–28.03 lbf⋅ft22.86–28.03 lbf⋅ft31–38 N⋅m
On engine bracket	30.98–37.62 lbf⋅ft30.98–37.62 lbf⋅ft42–51 N⋅m

expand_moreSubframe

expand_moreOn chassis


M10	59.74–73.02 lbf⋅ft59.74–73.02 lbf⋅ft81–99 N⋅m
M12	79.66–97.36 lbf⋅ft79.66–97.36 lbf⋅ft108–132 N⋅m

expand_moreTorque arm


M10	30.98–37.62 lbf⋅ft30.98–37.62 lbf⋅ft42–51 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


M8	17.7–22.13 lbf⋅ft17.7–22.13 lbf⋅ft24–30 N⋅m

expand_moreIgnition system


Spark plugs	17.7–22.13 lbf⋅ft17.7–22.13 lbf⋅ft24–30 N⋅m

expand_moreStart system


Starter	17.7–22.13 lbf⋅ft17.7–22.13 lbf⋅ft24–30 N⋅m

expand_morePower transmission tightening torques

expand_moreAxle drive

expand_moreDrive shaft intermediate bearing


M8	18.44–20.65 lbf⋅ft18.44–20.65 lbf⋅ft25–28 N⋅m

expand_moreFront axle drive shaft

expand_moreCentral nuts


First stage	49.42–54.58 lbf⋅ft49.42–54.58 lbf⋅ft67–74 N⋅m
Second stage	62°62°62°


M8	26.55–32.45 lbf⋅ft26.55–32.45 lbf⋅ft36–44 N⋅m

expand_moreClutch


Clutch pressure plate	19.18–22.13 lbf⋅ft19.18–22.13 lbf⋅ft26–30 N⋅m

expand_moreGearbox


Gearbox flange connection at engine	36.88–44.99 lbf⋅ft36.88–44.99 lbf⋅ft50–61 N⋅m

expand_moreGearbox lubrication

expand_moreGearbox oil drain plug


With manual transmission	11.8–19.18 lbf⋅ft11.8–19.18 lbf⋅ft16–26 N⋅m

expand_moreGearbox mounting


Screws at the gearbox bracket	31.72–39.09 lbf⋅ft31.72–39.09 lbf⋅ft43–53 N⋅m
On chassis	22.86–28.03 lbf⋅ft22.86–28.03 lbf⋅ft31–38 N⋅m

expand_moreGearbox support

expand_moreAt the gearbox


M10	30.98–37.62 lbf⋅ft30.98–37.62 lbf⋅ft42–51 N⋅m

expand_moreSuspension front tightening torques

expand_moreFront axle brake

expand_moreBrake hose


At the brake caliper	10.33–13.28 lbf⋅ft10.33–13.28 lbf⋅ft14–18 N⋅m
At the brake line	10.33–13.28 lbf⋅ft10.33–13.28 lbf⋅ft14–18 N⋅m

expand_moreBrake line

expand_moreFront axle


At the brake caliper	10.33–13.28 lbf⋅ft10.33–13.28 lbf⋅ft14–18 N⋅m

expand_moreFront axle brake caliper mounting support


M10	81.87–90.72 lbf⋅ft81.87–90.72 lbf⋅ft111–123 N⋅m


Front axle brake disc	5.9–9.59 lbf⋅ft5.9–9.59 lbf⋅ft8–13 N⋅m
Wheel speed sensor	2.95–5.16 lbf⋅ft2.95–5.16 lbf⋅ft4–7 N⋅m

expand_moreFront axle steering


Steering gear	81.13–100.31 lbf⋅ft81.13–100.31 lbf⋅ft110–136 N⋅m
Track rod end on stub axle	21.39–26.55 lbf⋅ft21.39–26.55 lbf⋅ft29–36 N⋅m
Track rod end on track rod	30.98–38.35 lbf⋅ft30.98–38.35 lbf⋅ft42–52 N⋅m

expand_moreFront axle suspension


Shock-absorber piston rod	22.86–25.81 lbf⋅ft22.86–25.81 lbf⋅ft31–35 N⋅m

expand_moreSuspension strut


Connection clamp at the suspension strut	59.74–65.64 lbf⋅ft59.74–65.64 lbf⋅ft81–89 N⋅m
Connection clamp at the transverse control arm	79.66–97.36 lbf⋅ft79.66–97.36 lbf⋅ft108–132 N⋅m
On chassis	17.7–21.39 lbf⋅ft17.7–21.39 lbf⋅ft24–29 N⋅m

expand_moreWheel suspension

expand_moreFront axle drive shaft

expand_moreCentral nuts


First stage	49.42–54.58 lbf⋅ft49.42–54.58 lbf⋅ft67–74 N⋅m
Second stage	62°62°62°


M8	26.55–32.45 lbf⋅ft26.55–32.45 lbf⋅ft36–44 N⋅m


Stabiliser mounting at the stabiliser	28.03–34.67 lbf⋅ft28.03–34.67 lbf⋅ft38–47 N⋅m
Stabiliser mounting at the stub axle	28.03–34.67 lbf⋅ft28.03–34.67 lbf⋅ft38–47 N⋅m
Stabilizer mounting at the subframe	19.18–23.6 lbf⋅ft19.18–23.6 lbf⋅ft26–32 N⋅m

expand_moreSupport joint at the stub axle

expand_moreNuts (M10)


Top	31.72–34.67 lbf⋅ft31.72–34.67 lbf⋅ft43–47 N⋅m

expand_moreNuts (M14)


Bottom	63.43–70.07 lbf⋅ft63.43–70.07 lbf⋅ft86–95 N⋅m

expand_moreUpper transverse control arm

expand_moreBearing pedestal


On chassis	29.5–36.14 lbf⋅ft29.5–36.14 lbf⋅ft40–49 N⋅m

expand_moreTrack control arm lower

expand_moreAt the subframe


M10	45.73–50.15 lbf⋅ft45.73–50.15 lbf⋅ft62–68 N⋅m

expand_moreWheel hub wheel bearing

expand_moreCentral nuts


First stage	49.42–54.58 lbf⋅ft49.42–54.58 lbf⋅ft67–74 N⋅m
Second stage	62°62°62°

expand_moreWheels and tires

expand_moreWheel attachment


Chrome-plated	64.91–79.66 lbf⋅ft64.91–79.66 lbf⋅ft88–108 N⋅m
With Dacromet coating	57.53–69.33 lbf⋅ft57.53–69.33 lbf⋅ft78–94 N⋅m

expand_moreSuspension rear tightening torques

expand_moreRear axle brake

expand_moreRear axle brake caliper


M10	35.4–38.35 lbf⋅ft35.4–38.35 lbf⋅ft48–52 N⋅m


Rear axle brake caliper mounting support	34.67–42.78 lbf⋅ft34.67–42.78 lbf⋅ft47–58 N⋅m
Rear axle brake disc	5.9–9.59 lbf⋅ft5.9–9.59 lbf⋅ft8–13 N⋅m

expand_moreRear axle suspension


Rear axle shock absorber piston rod	63.43–69.33 lbf⋅ft63.43–69.33 lbf⋅ft86–94 N⋅m

expand_moreRear axle suspension strut


On chassis	44.25–54.58 lbf⋅ft44.25–54.58 lbf⋅ft60–74 N⋅m
On stub axle	81.87–99.57 lbf⋅ft81.87–99.57 lbf⋅ft111–135 N⋅m

expand_moreRear axle wheel suspension

expand_moreLower front transverse control arm


At the axle support	70.07–85.56 lbf⋅ft70.07–85.56 lbf⋅ft95–116 N⋅m
On stub axle	70.07–85.56 lbf⋅ft70.07–85.56 lbf⋅ft95–116 N⋅m

expand_moreLower rear transverse control arm


At the axle support	45.73–50.15 lbf⋅ft45.73–50.15 lbf⋅ft62–68 N⋅m
On stub axle	70.07–85.56 lbf⋅ft70.07–85.56 lbf⋅ft95–116 N⋅m

expand_moreRear axle carrier


On chassis	45.73–50.15 lbf⋅ft45.73–50.15 lbf⋅ft62–68 N⋅m

expand_moreRear axle longitudinal control arm


On chassis	45.73–50.15 lbf⋅ft45.73–50.15 lbf⋅ft62–68 N⋅m
On stub axle	86.29–95.15 lbf⋅ft86.29–95.15 lbf⋅ft117–129 N⋅m


Rear axle stabilizer mounting	5.16–5.9 lbf⋅ft5.16–5.9 lbf⋅ft7–8 N⋅m
Rear axle stabilizer support at the stabilizer	28.03–34.67 lbf⋅ft28.03–34.67 lbf⋅ft38–47 N⋅m
Rear axle stabilizer support at the suspension strut	28.03–34.67 lbf⋅ft28.03–34.67 lbf⋅ft38–47 N⋅m

expand_moreWheel hub wheel bearing


Central nuts	224.22–247.82 lbf⋅ft224.22–247.82 lbf⋅ft304–336 N⋅m

expand_moreWheels and tires

expand_moreWheel attachment


Chrome-plated	64.91–79.66 lbf⋅ft64.91–79.66 lbf⋅ft88–108 N⋅m
With Dacromet coating	57.53–69.33 lbf⋅ft57.53–69.33 lbf⋅ft78–94 N⋅m

When assembling your 2005 Alfa Romeo 156 GTA it's important to tight threaded fasteners with Alfa Romeo prescribed torques using a torque wrench. If the torque values is lower then prescribed, bolt may unscrew itself and assembly may fall apart. If the torque value is higher then prescribed, bolt may simply break. The torque wrench allows you to tighten all bolts of the assembly with the same torque applied.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2005 Alfa Romeo 156 GTA 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 Alfa Romeo warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

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 Alfa Romeo 156 GTA 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 2005 Alfa Romeo 156 GTA you're not only saving money, but also also improving your technical skills and learning something new.

2005 Alfa Romeo 156 GTA Series 1 Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Alfa Romeo 156 GTA Series 1 model years

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