A 2014 to 2020 Isuzu D-Max with the 3.0 litre 4JJ1-TCX engine takes two belts, a 7PK1080 and a 13A1450, in our D-Max 2014 to 2020 belt kit. An October 2008 to 2011 D-Max with the 4JJ1-TC takes a 7PK990 alternator belt and a 13A1370 air-conditioning belt, in our D-Max 2008 to 2013 fan belt kit.
The 3.0 litre Colorado RC and Rodeo RA take the same 7PK990 and 13A1370 pair. Find your vehicle in the table. If your D-Max was built in 2012, 2013 or 2020, send us your VIN first.
| Vehicle (as listed) | Engine (as listed) | Built (as listed) | Belts in the kit (as listed) | Our kit |
|---|---|---|---|---|
| Isuzu D-Max TF | 3.0 turbo diesel, 4JJ1-TC, 120 kW | Oct 2008 to Nov 2013 | 7PK990 alternator belt, 13A1370 air-conditioning belt | D-Max 2008 to 2013 fan belt kit |
| Isuzu D-Max TF | 3.0 litre, 4JJ1-TCX | 2012 to 2020 in the fit list, 2014 to 2020 in the title | One alternator belt and one A/C belt: 7PK1080 and 13A1450 | D-Max 2014 to 2020 belt kit |
| Holden Colorado RC | 3.0 turbo diesel, 4JJ1-TC, 120 kW | Jul 2008 to May 2012 | 7PK990 alternator belt, 13A1370 air-conditioning belt | Colorado and Rodeo 3.0 fan belt set |
| Holden Colorado RC; Rodeo RA | 3.6 V6, LCA | Jul 2008 to May 2012; Dec 2005 to Aug 2008 | One 6PK1900 (alternator, water pump and power steering) | 6PK1900 belt |
| Holden Rodeo RA | 3.0 turbo diesel, 4JJ1-TC | Jan 2007 to Jun 2008 | Same pair | Same set |
Source: our product listings' titles and "Fits" lists, read 8 October 2026. Each kit holds two belts. Our two D-Max kits both name 2012 and 2013, with different engine codes (4JJ1-TC and 4JJ1-TCX), so for a D-Max built in either year, send us your VIN before you order.
The engine and build date pick the belts, not the badge
In our listings, the badge on the tailgate doesn't decide the belt size. The Rodeo RA, the Colorado RC and the D-Max from October 2008 all list the same 3.0 litre 4JJ1-TC engine, and the same two belts, on separate listings.
The later D-Max with the 4JJ1-TCX takes a longer pair. By the numbers, its ribbed belt is 90 mm longer (1080 against 990) and its V-belt 80 mm longer (1450 against 1370). So the two D-Max kits are not the same parts, and the build date matters.
The RG Colorado, from 2012, isn't on any of our belt kits. We list a tensioner pulley for it, but not the belts.
What 7PK1080 and 13A1450 mean
Each kit holds one belt of each kind:
- 7PK1080 is a ribbed (multi-V) belt: 7 ribs, the PK rib profile, and an effective length of 1080 mm. PK ribs sit 3.56 mm apart. The 7PK990 in the earlier kit has the same 7 PK ribs and is 990 mm long.
- 13A1450 is a single automotive V-belt. 13A is one of the automotive V-belt sections in the SAE J636 standard, and the 1450 is its length in millimetres.
Our team's advice for any belt: go by the number on the old belt where you can, rather than a tape measure. Our fan belt and drive belt guide explains ribbed belt numbers for other vehicles.
How to find the right belts for your D-Max or Colorado
- Read the numbers on both old belts. If they match a pair in the table, that's your kit.
- Check your build date against the table, then the engine code. If they point to different kits, send us your VIN. The Colorado RC and Rodeo RA 3.0 kit is the same pair as the October 2008 to 2011 D-Max.
- Send us your VIN if you're in an overlap. That means a D-Max built in 2012 or 2013, or in 2020 (our listing names 2020 but not the month). Send your VIN or registration and we'll confirm the kit from the make, model, year and engine.
- Have the belts fitted to the vehicle maker's specifications. Our listings say the parts "should be fitted by a professional and fitted to vehicle specifications". We don't publish belt tension figures or a fitting procedure.
Not in our fan belt range
None of our belt kits names these, so send us the numbers off your old belts:
- Colorado RG and Colorado 7 (2012 on, 2.5 and 2.8 litre diesels). We do list a tensioner pulley for them, with the LVN, LKH, LWH and LWN engines.
- D-Max built before October 2008.
- MU-X.
Which Bearings Express kit fits
- Pick the D-Max 2014 to 2020 belt kit (7PK1080 and 13A1450) for a 2014 to 2020 D-Max with the 4JJ1-TCX (for a 2020 build, send us your VIN first).
- Pick the D-Max 2008 to 2013 fan belt kit (7PK990 and 13A1370) for an October 2008 to 2011 D-Max with the 4JJ1-TC.
- Pick the Colorado and Rodeo 3.0 fan belt set (7PK990 and 13A1370) for a Colorado RC 3.0 (July 2008 to May 2012) or a Rodeo RA 3.0 (January 2007 to June 2008).
- Pick the 6PK1900 ribbed belt for the Colorado and Rodeo 3.6 V6 for a Colorado RC 3.6 V6 (July 2008 to May 2012) or a Rodeo RA 3.6 V6 (December 2005 to August 2008), engine LCA. Our listing names it as the alternator, water pump and power steering belt.
- Pick the tensioner and idler pulley for an RG Colorado or Colorado 7 on its fit list.
- Pick the air conditioner pulley for a 2007 to 2008 Rodeo RA 3.0 (4JJ1-TC), as listed.
More belt kits are in automotive belts.
Questions people also ask
What size is the D-Max alternator belt and air-conditioning belt?
On our 2008 to 2013 D-Max kit, the 7PK990 is the alternator belt and the 13A1370 the air-conditioning belt. Our 2014 to 2020 kit holds one alternator belt and one A/C belt, numbered 7PK1080 and 13A1450, but its listing doesn't say which is which, so check the numbers on your old belts.
Is the Colorado fan belt the same as the D-Max?
For the 3.0 litre Colorado RC and Rodeo RA, yes: our listings give them the same 7PK990 and 13A1370 pair as the October 2008 to 2011 D-Max. The 3.6 litre V6 Colorado RC takes a different belt, a single 6PK1900 in our listings. The RG Colorado isn't on any of our belt kits.
Where can I find a D-Max or Colorado belt diagram?
Not from us: we don't publish belt routing diagrams. What our listings give is the two belts in each kit and, on the earlier kits, which one drives the alternator and which the air-conditioning.
Does the D-Max or Colorado have a timing belt?
None of our timing belt kits lists the 3.0 litre 4JJ1 engine in these D-Max, Colorado RC and Rodeo RA models. Our Holden Rodeo timing belt kits are listed for the 3.2 and 3.5 litre V6 (6VD1 and 6VE1).
Why is my D-Max fan belt squealing?
Belt makers list belt tension that's too low, and a belt past its service life, as causes of belt running noise. Our fan belt and drive belt guide covers belt noise in more detail.
Related reading
- Fan belts and drive belts: what they do and how to find yours
- Holden Colorado RC, RG and Isuzu D-Max front wheel bearings: which kit fits
- Idler pulley vs tensioner pulley
Sources
- Optibelt, Technical Manual: Ribbed Belt Drives, pages 13 and 14 (rib pitch by profile, ordering example, PK effective lengths), https://a.storyblok.com/f/192292/x/818f0c788a/optibelt-tm-ribbed-belt-drives.pdf, read 8 October 2026.
- Optibelt, Automotive Technology Compact Catalogue, page 11 (MARATHON X sections, including 13A to SAE J636), https://a.storyblok.com/f/192292/x/4c1220a0ab/optibelt-compact-catalogue-automotive-technology-catalogue-en-digital.pdf, read 8 October 2026.
- Optibelt, Automotive Technology: The little "ABC" in the event of damage (belt running noise, causes and remedies), https://a.storyblok.com/f/192292/x/99b9533869/optibelt-automotive-technology-installation-maintenance.pdf, read 8 October 2026.
- Optibelt, MARATHON X V-belt for cars and vans (sizes listed as section x length in mm, e.g. AVX 13 x 1450), https://web.optibelt.com/en/v-belts/optibelt-marathon-x-6752364898000, read 8 October 2026.
Checked against the belt makers' documents above and Bearings Express product listings on 8 October 2026.
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